Fuel mileage with full system what to expect..

mkulchar · March 12th, 2012, 02:49 PM

Currently have a full stock bike and want to upgrade to the full system exhaust. Sportisi. I get 425kms per tank, which comes out to 58mpg. What am i looking at if i put a full system with jet kit.

And is the system worth the fuel loss for the power gained.

Thanks

Sorry if this has been asked elsewhere.

Graugaard · March 12th, 2012, 03:59 PM

not much. i would say the same, maybe a bit more since most open exhausts are lighter in weight than OEM's, but we are talking 1-2bhp more and maximum 5-10 kg lighter. You buy full exhaust on a 250cc for look and sound mostly imo.

Jiggles · March 12th, 2012, 05:01 PM

You buy a slip on for look and sound, a full system with proper jetting will result in some significant and noticable power gains. It's not like it's going to make you do power wheelies but you will definitely notice a difference in power, especially on the highway. Most full systems also change up the power band, moving max HP from 10.5k to around 12k. This allows the bike to pull harder all the way through the powerband as opposed to beginning to drop off early.

Here's the difference in power of one of the top performing pipes by AreaP

250rr · March 12th, 2012, 05:07 PM

That is actually a signigicant percentage horsepower increase. More than I would have guessed!

Jiggles · March 12th, 2012, 05:08 PM

Oh you will definitely lose a few MPG's but the nice thing about the Ninja is that you can mod it all you want, ride like you stole it, and still get 40mpg

mkulchar · March 12th, 2012, 05:10 PM

ah, something to think about.. Thanks for the graphic

choneofakind · March 12th, 2012, 07:08 PM

The only thing that isn't really fair about the dyno graphs from area p is that they compare the bike with the airbox gone, and the full system. Sooo they're showing the dyno results for someone elses product not just their exhaust system.

Love their stuff though. Not slamming on them at all. I highly recommend them because I like the fact that Kerry has taken an active role with a smaller bike that everyone seems to forget about. And he's a nice guy. For that alone, I will continue recommending his products.

Jiggles · March 12th, 2012, 07:31 PM

You forgot that they are also using customized jets! It's all just part of the process.

March 12th, 2012, 02:49 PM	#1
mkulchar ninjette.org member Name: matthew Location: niagara Join Date: Jul 2011 Motorcycle(s): 2010 250r ninja Posts: 115	Fuel mileage with full system what to expect.. Currently have a full stock bike and want to upgrade to the full system exhaust. Sportisi. I get 425kms per tank, which comes out to 58mpg. What am i looking at if i put a full system with jet kit. And is the system worth the fuel loss for the power gained. Thanks Sorry if this has been asked elsewhere.

March 12th, 2012, 05:01 PM	#3
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	You buy a slip on for look and sound, a full system with proper jetting will result in some significant and noticable power gains. It's not like it's going to make you do power wheelies but you will definitely notice a difference in power, especially on the highway. Most full systems also change up the power band, moving max HP from 10.5k to around 12k. This allows the bike to pull harder all the way through the powerband as opposed to beginning to drop off early. Here's the difference in power of one of the top performing pipes by AreaP __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

March 12th, 2012, 05:08 PM	#5
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	Oh you will definitely lose a few MPG's but the nice thing about the Ninja is that you can mod it all you want, ride like you stole it, and still get 40mpg __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

March 12th, 2012, 07:31 PM	#8
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	You forgot that they are also using customized jets! It's all just part of the process. __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

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March 12th, 2012, 03:59 PM	#2
Graugaard ninjette.org member Name: Elias Location: Denmark Join Date: Nov 2011 Motorcycle(s): Ninja 250r Posts: 152	not much. i would say the same, maybe a bit more since most open exhausts are lighter in weight than OEM's, but we are talking 1-2bhp more and maximum 5-10 kg lighter. You buy full exhaust on a 250cc for look and sound mostly imo.

March 12th, 2012, 05:07 PM	#4
250rr ninjette.org certified postwhore Name: Mark Location: Portland Join Date: Sep 2010 Motorcycle(s): Cheap Italian Suit. Otherwise known as Dew Kitty Posts: A lot.	That is actually a signigicant percentage horsepower increase. More than I would have guessed!

March 12th, 2012, 05:10 PM	#6
mkulchar ninjette.org member Name: matthew Location: niagara Join Date: Jul 2011 Motorcycle(s): 2010 250r ninja Posts: 115	ah, something to think about.. Thanks for the graphic

March 12th, 2012, 07:08 PM	#7
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	The only thing that isn't really fair about the dyno graphs from area p is that they compare the bike with the airbox gone, and the full system. Sooo they're showing the dyno results for someone elses product not just their exhaust system. Love their stuff though. Not slamming on them at all. I highly recommend them because I like the fact that Kerry has taken an active role with a smaller bike that everyone seems to forget about. And he's a nice guy. For that alone, I will continue recommending his products.