Hello guys , here's a teaser video for you :) more vids will be coming, including dyno charts .

We're developing a turbocharger kit for the ninja 250 EFI and this will also work on the ninja 300 EFI. on stage 1 its running low boost at 0.5bar and on standard engine . we make this kit to be bolt on and make your bike like a sleeper bike, the only difference is the sound of the turbo and BOV which is awesome.

We will make this kit available for the US customers if theres lots of interest from you guys . Im not gonna be answering details of this kit until its truly finished.

Thanks guys
jY_1tobNmcA

1st dynotesting - comparison between standard , fs exhaust and turbocharging it
http://www.freeimagehosting.net/t/3uzo1.jpg

:eek:
Want.

lol this is awesome. Sucks I'd have to go EFI first in order to even consider running this setup. :(

interested to know times on it...

Gotta have it. Nitrous is a natural intercooler.

I'm curious to see the intake plenum/box setup.

Want!

Make it work with ecotrons!

Sounds cool, but I am worried about side effects -- don't want to shorten my engine life or anything. But definitely keep us posted :D

yup, this rocks.

except that i'm not efi. :(

ill take a kit :thumbup: any idea what kind of timeframe were looking at here?

The video is blocked at work. What turbo are you using?

We're gonna do a lot of test rides and dynos trying to get the safest setup with the highest performance . Since the US market doesnt have a 95 octane fuel, we may turn down the boost a bit . unless you;re using nitrous like Racer X:)
We'll keep you guys updated - target hp increase is 30% - so we want to pass 40hp mark for safe daily use for the 250 , and maybe around 48hp for 300.

Interesting, but skeptical that it'll be engineered correctly. Hope to goodness the boost threshold isn't 10k RPM like it is under free-rev in your video. That would make the turbo worthless around town.

I'll expect to see full RPM range dynos with AFR, and how you're adjusting ignition or can otherwise prove the engine isn't knocking with pump gas. Keep in mind our fuel is rated "AKI" as [R+M]/2, not just RON. On the east coast US, we have ~97 RON, or 93 AKI. The west coast US gets 91 AKI which is 95 RON, same as Indonesia.

THanks for the information-that way we can adjust the boost the same as in Indones ia.
By maintaining the standard compression we are keeping drivability of the bike until the boost hits, it starts to spool around 5000rpm and hit full boost at 9000rpm. Power commander is use to adjust fuelling and ignition.
Thats why we are testing it extensively , to make sure its safe and reliable for daily use, to look for engine knocks and temperature spikes which can destroy the engine.

and with REVEXTEND feature from powercommander we can increase rev limits up to 14000rpm or more, we have done this to lots of 250

Will this work with the 2011 ninja? Mine is efi with PCV and auto tune. Also can you give a ball park estimate of how much this will cost?

cant wait, as long as youll ship to Oz of course :D we have 95 here also

we ship anywhere in the world of course :D but priority will be the US market because our representative is there and he can offer warranty and tech support. but of course you can also contact us directly

we ship anywhere in the world of course :D but priority will be the US market because our representative is there and he can offer warranty and tech support. but of course you can also contact us directly

Will this work with the 2011 ninja? Mine is efi with PCV and auto tune. Also can you give a ball park estimate of how much this will cost?

Will this work with the 2011 ninja? Mine is efi with PCV and auto tune. Also can you give a ball park estimate of how much this will cost?

I believe it will work, if the engine positioning is the same. maybe some tweaking will be needed, but we will do this for you no problem . but you need a good dyno tuner to remap the PC5. Autotune is good for lower rpm ranges and throttles, but no good for higher rpm. You need a dyno tune to do it right

2nd teaser video :D FREE RUN ON DYNO AFTER MAPPING
gloKlAC0nWU

I am very excited about this. I am building a whole new bike around a turbo fuel injection nitrous system. This will save me a lot of time and money over doing it from scratch.
I like that you are building it as a real world kit .
I just can't wait to see how the other forums react to it. They flame anyone who asked about nitrous or turbo.

Will this work with the 2011 ninja? Mine is efi with PCV and auto tune. Also can you give a ball park estimate of how much this will cost?

Yes it will work, but you will need to set it up for your bike since the 2011 or better to say the Newgen has a higher cr and the ignition is more advanced and that makes it absolute necessary to set it up cos the setup for the 2013 models must not, but can blow up your engine.

Yes it will work, but you will need to set it up for your bike since the 2011 or better to say the Newgen has a higher cr and the ignition is more advanced and that makes it absolute necessary to set it up cos the setup for the 2013 models must not, but can blow up your engine.

How can I set it up if I have no dyno etc...

I am very excited about this. I am building a whole new bike around a turbo fuel injection nitrous system. This will save me a lot of time and money over doing it from scratch.
I like that you are building it as a real world kit .
I just can't wait to see how the other forums react to it. They flame anyone who asked about nitrous or turbo.

We tested the bike couple of times, and it put a smile on my face everytime the boost hit hard :) Things that we need to do last is testing and more testing, monitoring the engine parameters to make sure that it wont blow up under boost.

We won 3 race titles last year on a ninja 250 - so yes this is an engine that we really know very well. I dont like to talk much , but I want to show results and share with you guys .

Yes it will work, but you will need to set it up for your bike since the 2011 or better to say the Newgen has a higher cr and the ignition is more advanced and that makes it absolute necessary to set it up cos the setup for the 2013 models must not, but can blow up your engine.

The 2011 250cc and this new 250cc FI ninja share the same compression ratio.
The 300c ninja has even a lower compression ratio of 10.6

How can I set it up if I have no dyno etc...

That will be a problem . if you have the same exact bike and specs like ours then we can send you the pc5 map no problem. You just plug it in and go .

I too know this engine. And I have a lot of respect for it. I set seven land speed records at Maxton and four last year in Ohio. Last week with nitrous a got a very strong 50-55 hp. And 24 ft lb of torque. This engine is a jewel.

The 2011 250cc and this new 250cc FI ninja share the same compression ratio.
The 300c ninja has even a lower compression ratio of 10.6

Maybe the 11.3 from the 2013 and 11.6 from the newgen is no big difference, so you don't need to care about it.

yes i want one but i have the Area P micro tuner that just has fuel adjust no timing adjustment.Is there any chance that would work?ninja 300

Also what would something like this cost? 500$ 1000$ 1500$

the micro tuner is the same as DFC from dynojet, they are all made by Dynojet and can use PC5 maps. Yes you can use the micro tuner . So far we tested it no detonation and no problems without a timing retard . Just make sure that the tuner now whats hes doing and adjusting the AFR right for turbo application which is much richer than NA motor .

We're making this kit to be as simple as possible but still safe and reliable for the road. And we are looking for under $1500 price range. The good news for US customers is some parts were sourced from there, and we;re working with our US dealers for these parts, so for you who lives there can get this kit much cheaper or at least the same as our pricing here, cause we;re only sending the parts thats not available there.

Im a potential customer! Ive built a few turbo mustangs and had thought about fabbing up somthing for my bike. For the price your asking Id be glad to buy one that is allready proven and tuned. Good work!!

I'd buy one

FIRST DYNO TESTING - 37,4HP comparison between standard , fs exhaust and turbocharging it
http://www.freeimagehosting.net/t/3uzo1.jpg (http://www.freeimagehosting.net/3uzo1)

we're looking for 40hp+ so we're gonna work on this .

The torque line is awsome. What are you doing for boost retard? Are you pulling the timing? I found power going up by regarding the ignition timing some.

I still haven't retard the timing for this application until I hear a detonation, I did powerrun repeatedly at 100 percent throttle maybe more than 20 times ,this test is using a lower grade fuel, then on the last 3 runs I heard some detonation on higher rpm then we stop, we poured in some octane booster, and the detonations gone, hit 39hp one time but thats just spike, power stable at 37hp+ .So definitely we will retard the timing and adjust accordingly of course, Retarding the timing is the simplest solution and cheapest because the pc5 already has a built in ignition module.
A radiator upgrade is needed and we will make a bigger capacity radiator and will be an option for this kit .An intercooler setup is also on its way along with a stage 2 hiboost option .

First Power Run

64HPGXIx3mA

nice job. That is a very nice.

omg, this just made me want to get a ninja 300! subscribed.

bprayogo
Any updates on this one mate?

First Power Run

64HPGXIx3mA

You work for sportisi? Any news on 300 windscreens, I'm so wanting one like y'all got for the 250's... The turbo is sounding like something I'd be into before to long aswell!!!

Yes I am Sportisi :))
We are fitting an intercooler, and a bigger radiator .
The placement and piping is really really difficult . We let u know the progress and post it here .

oh and we already have the 300 windscreen ,please contact Sam Wang for inquiry

What are you doing for boost retard?

None of your business, loser! :D :p

:)

None of your business, loser! :D :p

:p

Good stuff... Gonna be lookin for it bout payday

Have you guys thought about using a supercharger instead of a turbo?

Electric powered super charger???

Electric powered super charger???

Nope, those are absolute rubbish... I mean a proper supercharger, or a smog pump super charger...

The belt makes it impractical,

^ what he said... I still dunno what a smog pump supercharger is, but I had a smog pump on an old truck I had, belt ran also...

The belt makes it impractical,

Yea, they would have to machine a different housing, output shaft, belt, pulleys, and mounts for the supercharger. then fabricate a custom intake and manifold.

its not too bad for a car but bikes have a lot less room to play with.

Also the belt would have to spin at 12000 RPM . Unless you ran it off the cam.It can be done. Its just not a KIT thing.

updates? pics? vids? anything! lol :D

Sorry took so long :)
but we did it - slapping on a water to air intercooler because the space is just too tight . we manage to reach 40.4hp and 26nm torque .

going to make a street riding video

http://www.freeimagehosting.net/t/6fcj7.jpg (http://www.freeimagehosting.net/6fcj7)
http://www.freeimagehosting.net/6fcj7

Sorry took so long :)
but we did it - slapping on a water to air intercooler because the space is just too tight . we manage to reach 40.4hp and 26nm torque .

going to make a street riding video
http://www.freeimagehosting.net/t/fzwet.jpg (http://www.freewebproxy.com/)

cant see the picture mate

Well it look okay from here :) gonna look at it again soon.im not on my laptop now
Posted via Mobile Device

Want!

Well it look okay from here :) gonna look at it again soon.im not on my laptop now
Posted via Mobile Device

sounds good mate, can we get some pics of the setup?

Will post more pics soon . our major issue was getting the radiator for the intercooler in place which is really hard considering the tight space, we came up with a small radiator designed custom for this setup and fit well. we are testing the bike thru heavy traffic now hopefully nomore over heating .

The bike make the most power at around 95 degrees celcius :)

That is why I am mounting my radiator behind the seat.

THen youre using a fan for cooling , since you put it behind the seat?

Yes and an electric water pump. Also the rear wheel will move back four inch and allow ducting to the ground.

Am I the only one who finds the results kind of underwhelming?

Am I the only one who finds the results kind of underwhelming?

All that just to fall short 3hp of the old 1995 RS125 and still be 200lbs overweight :lol:

But really 40hp I think is a great number considering what they're working with as a base.

Am I the only one who finds the results kind of underwhelming?

considering they started out with under 30hp, i dont think 30% increase is too bad depending on the work and reliability.

considering they started out with under 30hp, i dont think 30% increase is too bad depending on the work and reliability.

Oh, my bad! I keep thinking 300 meaning only a 5hp increase... Yeah, 30% is great. Dies that mean the 300 will see ~45hp?

Oh, my bad! I keep thinking 300 meaning only a 5hp increase... Yeah, 30% is great. Dies that mean the 300 will see ~45hp?

45hp sounds reasonable, if a similar setup is used.
the turbo lag probably wont be too bad.:D

40hp isn't shabby but I know Morgan at MPFab was pulling low 50's out of his WR250X (single 250 turbo) at 9psi or so.

remember we're aiming for daily use on this kit. without sacrificing the low end power. so we tested the bike and down low its smooth and give out a usual power and torque like standard ninja 250 - thats until the boost kick in and yeaaaah baby :))

What you are doing is very dificult. 40 HP with street manors from a 15 cubic engine.
:thumbup:

remember we're aiming for daily use on this kit. without sacrificing the low end power. so we tested the bike and down low its smooth and give out a usual power and torque like standard ninja 250 - thats until the boost kick in and yeaaaah baby :))

I'm with you on retaining stock feel and longevity with this kit. :thumbup:

Take note to the dyno chart I posted, it shows two runs, both are the same WR250X but one run is with a full exhaust and the other is with the turbo kit; the low end power is nearly identical. No reports of longevity issues from all the customers using the kit and the owner only experienced a failure after exceeding 61rwhp+ on his kit (with a slightly larger turbo).

Let me also note that none of his kits come with or use an intercooler.

40hp isn't shabby but I know Morgan at MPFab was pulling low 50's out of his WR250X (single 250 turbo) at 9psi or so.

Dude you can't compare a Ninja 250 to a Yamaha it just not fair, I'm come on.....it's a Yamaha :rolleyes:

Dude you can't compare a Ninja 250 to a Yamaha it just not fair, I'm come on.....it's a Yamaha :rolleyes:

:p

I think the 250 and 300 are more than capable of putting down numbers closer to 50rwhp, safely, under the right conditions.

Wheres the turbo?
http://www.freeimagehosting.net/t/q7wrc.jpg (http://www.freeimagehosting.net/q7wrc)

http://www.freeimagehosting.net/t/gl9ql.jpg (http://www.freeimagehosting.net/gl9ql)

THere it is
http://www.freeimagehosting.net/t/r8b7h.jpg (http://www.freeimagehosting.net/r8b7h)

Theres the BOV
http://www.freeimagehosting.net/t/2keht.jpg (http://www.freeimagehosting.net/2keht)

look at the dyno and note that I use the revextend feature from powercommander to increase rev limit to 14000rpm!

pretty nice, i knew there would be enough room for it up front

Yes but not enough for a frontmout intercooler.

Are you using the VZ21 turbo?

The 14000 rpm rev limit is good but the power will too out below 13.

Yes.its a vz21 - we tried a larger turbo, we dont like the turbo lag. from the compressor map this turbo is perfect for the 250 :)

Oooh and I assure you it pulls hard to 14000 rpm :) although the torque is going down the horsepower stay flat. with this setup 14000 rpm is very fast! once the boost hits

I like the VZ 21. Not only is the map perfect but it has all the repair parts available.
Are you water cooling the turbo?

I only think of power in 6th gear. With 50 HP the 14000 will come very quick below fifth gear.

no water cooling just oil cooled and lubrication

That's all you need. But there is a water pipe available.

I just can't wait for this to be released! I love the 300, but I really just want a bit more power out of it, and this will be absolutely perfect for me.

I have just a few questions:
1. I believe this has been answered in other forums (possibly even this one, but forgive me if I missed that bit of info), but how much do you think this kit will cost?
2. Do you have any sort of time frame for release, even a wild guess?
3. Will you be able to put together a detailed video and/or a detailed set of instructions for putting all of this together for the non-mechanically inclined riders such as myself? I have a shop that I could take it to, but I much rather put it on myself if had a nice set of instructions :)

I can pretty much guarantee that the second this is put up for sale, I will be picking one up :D

EDIT: One more question. I have been wondering this since I saw the first video, but is the speedometer in KMH or MPH (probably a stupid question, but just want to be sure)? Also, what is the anticipated top speed of the bike in real world situations? Thanks!

A 250/300 ninja with an average size rider should hit 120 mph in a mile with 40 HP.

Get the setup ready for production and sell it, I'm waiting to buy.


I just need a kit that will be capable of 50+ with custom tunes/boost.

I just can't wait for this to be released! I love the 300, but I really just want a bit more power out of it, and this will be absolutely perfect for me.

I have just a few questions:
1. I believe this has been answered in other forums (possibly even this one, but forgive me if I missed that bit of info), but how much do you think this kit will cost?
2. Do you have any sort of time frame for release, even a wild guess?
3. Will you be able to put together a detailed video and/or a detailed set of instructions for putting all of this together for the non-mechanically inclined riders such as myself? I have a shop that I could take it to, but I much rather put it on myself if had a nice set of instructions :)

I can pretty much guarantee that the second this is put up for sale, I will be picking one up :D

EDIT: One more question. I have been wondering this since I saw the first video, but is the speedometer in KMH or MPH (probably a stupid question, but just want to be sure)? Also, what is the anticipated top speed of the bike in real world situations? Thanks!

The parts that will take longest to produce is the intercooler . I'll post some more pics so you all can see . We are currently looking for a manufacturer for this part:) after we find em then we can release the approximate release date for the kit .

and our speedometer is in KMH

Looking forward to your progress. 200 kph is 125 mph.

http://www.freeimagehosting.net/t/op27w.jpg (http://www.freeimagehosting.net/op27w)

http://www.freeimagehosting.net/t/e29nr.jpg (http://www.freeimagehosting.net/e29nr)

http://www.freeimagehosting.net/t/rnv4k.jpg (http://www.freeimagehosting.net/rnv4k)

NICE !
A water to air intercooler. The race bikes use them with ice water in the gas tank.

Going to offer a kit without the intercooler?

Any data logging to show the benefits of your intercooler?

water 2 air ic, sweet!

Very interested as well! Was looking into custom fabbing a Turbo setup for my 300. I'd love to pick one of these up!

i would like to see a dyno sheet of this...

i would like to see a dyno sheet of this...

page 2 my friend. and remember thats a ninja 250r not a 300

street riding video- sorry bad traffic :)
1xmSIaDTPUk

awesome clip.

A water to air intercooler would be insanely impractical, costly and overly complex with no real gains to be had whatsoever.

With such low boost levels a simple small AIR/AIR intercooler is that would ever be needed.

A water to air intercooler would be insanely impractical, costly and overly complex with no real gains to be had whatsoever.

With such low boost levels a simple small AIR/AIR intercooler is that would ever be needed.

i agree, air/air would be much more practical

Sorry took so long :)
but we did it - slapping on a water to air intercooler because the space is just too tight . we manage to reach 40.4hp and 26nm torque .

going to make a street riding video

http://www.freeimagehosting.net/t/6fcj7.jpg (http://www.freeimagehosting.net/6fcj7)
http://www.freeimagehosting.net/6fcj7

I haven't read every post so I could have missed something but how come there isn't crazy turbo lag shown on the dyno read out? Especially if the boost is not kicking in until 9k? or even 8k rpm?

If that is the case at 7krpm the boost has not hit yet right? but the chart is still showing pretty significant torque and hp numbers.

Tell me I am missing something.

Has there been any rough estimates on pricing for this kit yet? $500? $1000? more? Does it include EFI kit, or just turbo components?
As much as I am all about tweaking out small displacement bikes and getting them to haul *** I question the actual usefulness of this outside of drag/landspeed racing.
Seems like a lot of work trying to polish a turd so to speak. I don't necessarily think the 250 is a turd but putting a turbo on a stock ninja 250 seems like the American approach to sports cars. "HEY!! lets put the biggest engine we can fit into it so it makes tons of unusable torque and completely neglect suspension, brakes and general handling so we can offer it at a low cost"

could be i'm getting old and grumpy but at some point I feel like you have to draw a line and say... ya know what, I can just buy a different bike that has comparable or more HP than the turbo offers but in turn also get better suspension, brakes ect... at a similar cost and with no work on my part or chance of me totally efing everything up.

ok ok so I see this coming (you are missing the point! I want the fastest most tricked out ninja 250 on the west coast, I don't care about other bikes) but I do get it and unfortunately it's just not worth it IMO. I see regret in your future.

(I guess i'm Debbie downer today WTF? :eek:)

^^ I see where you're coming from. They should make cartridge drop-ins, Ohlins shock, SS lines, Vesrah pads, Tapered head bearings, 420 chain conversion, and DRII's part of that kit as well. Race bike in a box, forget the turbo :)

so has there been any progress on this kit so far ?

Same Here, looking to custom fab a Turbo Kit, had experience on custom fab a Skidoo 4stroke 1200 and installed a twin on a 5.0 Mustang...

So anyone else thinking about doing this?

I am in the middle of one. It's on hold for a couple months as I develop my fuel injected nitrous bike.

What are you using as a Turbo?

What are you plan on lowering down CR? I was thinking of a thicker head gasket (That what we did on the 1200 skidoo)

Fuel Management?

Bigger Injectors?

Thanks :)

I am using the VZ 21 turbo. You can use thick gaskets to lower compression. But you need forged pistons. Wossner or JE will make anything you need. Either way you will need to deal with changing cam timing.

I addition to the turbo I am using Ecotrons fuel injection system. I am building a turbo with low boost. Under 7 psi and using high compression. This is an all out race engine not for the street.

Well as far as timing, those guys sell adjustable cam sproket

http://ape-store.com/shopsite/page34.html

250 are the same as the 300 as per kawa EPC

I think the gears come from a 900 actually. But you can also slot the holes. It's knowing how much the change that is the key.

Listen to Eric

any update on this turbo kit?

Interested in an update aswell. I have to let you know however, the cam sprockets mentioned are discontinued :( and they are most definatly not from a 900. They ONLY fit Newgen 250s and 300s. The ones we made were specifically designed for the 250. Not enough interest to sell enough of them to keep them in production.

That is really a shame. I need two sets

All this talk of turbos :thumbup:

:-)

http://i977.photobucket.com/albums/ae251/garth285/20141017_153457_zpsikrcluen.jpg (http://s977.photobucket.com/user/garth285/media/20141017_153457_zpsikrcluen.jpg.html)

You better check wheel clearance and oil drain back. I had that exact placement and it was to low

going to check the wheel tomorrow, as for drainage I will run a pump if needed.

I think there is a way to run oil pressure from the engine and an evacuation pump to put the oil back into the sump. The oil is is the only thing I have left to do. I plan to run back to the clutch cover and pull oil from the pressure tap on the block.

One more thing. What does your exhaust flange look like?

I think there is a way to run oil pressure from the engine and an evacuation pump to put the oil back into the sump. The oil is is the only thing I have left to do. I plan to run back to the clutch cover and pull oil from the pressure tap on the block.

yeah exactly, you can pull oil from the galley plug on the right side of the motor or from the banjo bolt on the head. I have the adapter for both but will probably run it from the galley I think it was a 18mm plug or so but I have an adapter to give me a 4AN fitting.... from there I will actually try to return the oil back threw another banjo type fitting to one of the oil drain plugs and if I need it I will run a scavenge pump down low. The turbo won't be above the oil level line so it should work out. I'll know in about a week :-)

One more thing. What does your exhaust flange look like?

I'll post up pics tomorrow, for starters I'm going to run something sorta ugly and just dumping out to the side but will have my o2 sensor in it for base line tuning....

I am cureous to see the flange that blots to the turbo.

for the exhaust or the turbo or the inlet of the turbo?

The one from the turbo to the exhaust pipe. Mine was a flat plate with a hole in it. The plate blocked the waste gate from opening.

Ima need somebody to figure this out... I want moar powaaaaaaa

The one from the turbo to the exhaust pipe. Mine was a flat plate with a hole in it. The plate blocked the waste gate from opening.

Oh mine was open. I did see a flange like that before though I thought the same thing if it was closed it might block the wastegate

http://i977.photobucket.com/albums/ae251/garth285/20141017_153450_zpsltmmoymr.jpg (http://s977.photobucket.com/user/garth285/media/20141017_153450_zpsltmmoymr.jpg.html)

Right my flange is not like that. I need that flange and my flange. Is your flange available? I need that piece

I bought my turbo from this guy, maybe contact him and ask?

http://www.ebay.com/itm/Mini-Turbocharger-VZ21-for-Small-Engines-100-hp-IHI-RHB31-turbo-Motorcycle-UTV-/171240615758?pt=Motors_Car_Truck_Parts_Accessories&hash=item27debc6f4e&vxp=mtr

perfect
i should but a back up turbo and get the flange with it.

Plenty of clearance.... will be posting pics on my blog here shortly:

http://www.turbo250.com/wp-content/uploads/2014/10/20141027_174155_resized.jpg

Any more movement on the turbo kit, or is this thread (and product) basically dead?

Any more movement on the turbo kit, or is this thread (and product) basically dead?

Got me excited for this thread...:p

Got me excited for this thread...:p

Yeah, total thread resurrection bump there. :lol: I was just thinking about it and was curious what happened to this. Seems no one is even interested in the whole turbo thing, even though everyone was all ZOMG EFI! when the 300 came out. Go figure :rolleyes:

Soooo, any news? ahaha, think I am late..

Yes, you are too late, Sportisi USA is no more. Here's what you need for power and durable turbo installation:

1. programmable standalone aftermarket EFI system. Mega/MicroSquirt, Haltech, MoTeC, Electromotive TEC, etc. Best to install EFI system on bike first, and program it for NA mode and running well before adding turbo.

2. wideband O2-sensor: AEM, TechEdge, etc. Stay away from Innovate (very long story involving Porsches). Again, best to add to bike and use it to tune EFI in NA mode first. Get one with digital on-board datalogging so you don't have to use laptop to collect data. Much more precise and safer than staring at tiny 50mm wideband gauge while going down street at 200kph+. :eek:

3. smallest turbo on market, Garrett GT0632SZ good for ~80bhp. Everyone is using cheaper VZ21 RHB31 but that's way, way too large of turbo good for ~150bhp. Will end up with lots of lag and surge at low-throttle/low-RPMs.

4. custom exhaust and intercooler piping to fit. Best to position turbo as high as possible so drain can have straight run to oil-pan above oil-level for complete drainage. Also intercooler is must-have when running 1-bar+ boost (minimum amount to make this effort worthwhile). This will give you about 50bhp at rear-wheel or little more than Ninja 400.

5. forged pistons & con-rods. At some point, pressure and heat from boost and extra pressure will fry factory pistons & con-rods. You can wait til it blows to rebuild, but may end up with destroyed engine-cases as well. JE, Wiseco, CP, Mahle, Arias, Wossner (my favourite) all can make strong forged hypereutectic pistons for boosted applications. If you don't know all details to fill out their piston order-form, call them for help and discuss your project.

6. stiffer intake-valve springs. You'll have valve-float at high-RPMs and collisions with pistons due to boost holding intake valves open. Might as well replace valves with 1mm larger 300 valves while there. Port & polish intake to match as new-gen 250 has extremely restricted ports and conservative cam-specs.

7. hours and hours of dyno-tuning. You can come close with wideband, but will still need actual dyno-testing to dial in last 10% of mixture & ignition-maps.


In end, you'll have turbo bike that'll have at least double power than stock. Or more if you have good tune from wideband and dyno-testing. AND most importantly, it'll last for years rather than months like all ones we've seen before blowing up. Key ingredient here is properly dialing in fuel & ignition-maps that fits your configuration.

NO, don't even think about ecotrons...

Thanks for the fast response! My New Gen Ninja 250 08 came with EFI from the factory, and do you know anything about the cost of a turbo build?

Mostly same process as carbureted 250. You'll want to replace most of factory EFI system anyway:

- replace factory ECU with aftermarket fully-programmable EFI system
- replace most of factory harness for EFI section anyway. Adapting/splicing connectors is messy
- replace factory fuel-pump with higher-volume aftermarket pump with 2-3x flow capacity

- replace factory injectors with aftermarket with 2-3x flow capacity. Might even want to go with staged/sequential injectors, 2x per cylinder (4 total). Problem with many turbo bikes is shortest injector-pulse using large injectors is still too much fuel for clean idle. So having 2 smaller injectors gives you good idle and 2nd injector comes on around 5-6K rpms to support high-flow needed for boost. This requires ECU that supports 2 staged injectors per cylinder with 2 separate fuel-maps per cylinder and knows how to blend them.

- replace individual throttle-bodies with common-plenum intake-manifold with single throttle-body. This is to combine and balance uneven pulses from uneven firing. I recommend using MAF sensor before intake-manifold rather than factory MAP sensor. Much cleaner signal without uneven pulses from MAP-sensor causing trouble with load-calculations. Use alpha-N combination of TPS-position and MAF-flow signal for load-calculations.

After all EFI system upgrades needed to support turbo, you may only reuse TPS and factory injector connectors and that's it!

As for costs, add up individual parts and double or triple cost. Parts may be only 20-25% of total cost. Another 20-40% will be installation depending upon how much cutting and welding you can do yourself. Final 30-40% is tuning and dyno costs. This final part is why so many turbo bikes only lasts couple weeks before blowing. Insufficient time tuning on dyno, especially at 100% throttle in top-gear. Many end up with lean AFR and overheat pistons and exhaust-valves, causing them to melt. Also ignition-timing is extremely important and most people re-use factory 2D ignition maps, which is completely wrong for turbo. You'll want 3D map and fine-tune ignition maps in top 50% load rows for operation above 1atm.

Check out this thread for latest turbo-build: https://www.ninjette.org/forums/showthread.php?t=334518