Area P - Quiet Module - D.E.I.

kbryant · April 6th, 2009, 02:39 PM

We've had requests from those who have purchased the Standard Muffler and are looking to quiet it down without the additional expense of having to purchase the Long Quiet Muffler.

Attached are pictures of our "D.E.I." (Dual Element Insert) which debuts on this forum. We designed a first generation of this sound attenuator many years ago for a company called Jardine (it was called QMI or Quiet Module Insert). The D.E.I is a brand new product and far superior. It consists of a 304 series stainless steel "Nozzle", and a 6061 billet cnc aluminum "Module" insert with high temp O-Ring.

Essentially, it installs/inserts into your turn down exit tip and is secured by a single screw. You simply drill a hole in the tip and install the DEI. It comes with detailed instructions and is very easy to install.

It can be used as simply the "Nozzle" by itself. Or for further attenuation of sound, both the Nozzle and Billet module together. It will reduce decibel levels by 6 - 8 dbA. You can remove it completely also, as the small 5.5mm hole that you drill in the tip will not affect anything and puts the power/sound right back where you started. Although it will reduce the sound level, it will also reduce the power level that you gained.

It will not be nearly as quiet and/or perform as well as the Long Quiet Core Muffler. But for those people looking to reduce the sound level of their Standard muffler, this is a less costly solution.

Intro price is $39.95. Shipping cost is $6.00. It comes in a small box and is shipped by Priority Mail. We do not have specific test data on it for the 250R (we've tested this unit on a wide array of other models from Offroad to large displacment sportbikes). If someone would like to drop their bike off at our facility, we will install one at no charge to document specific test results.

kkim · April 6th, 2009, 02:46 PM

would this work on the quiet core mufflers as well?

kbryant · April 6th, 2009, 04:03 PM

Sure would Kelly. It should have the same basic affect. I just don't know what the "performance" results would be on the Long Quiet Muffler. How about I send you one for "R&D" purposes (no charge) and you tell me what you think?

kkim · April 6th, 2009, 04:07 PM

Damn, Kerry... that would be awesome!

Though I have no access to a mechanical dyno to prove my findings, I'll start tuning up the ole butt dyno right away!!

mahalo, sir!

woohoooo!!

CaliGirl · April 6th, 2009, 04:23 PM

I would love to leave you my bike for testing.....I think I need to get an actual AP exhaust first

stroked59 · April 6th, 2009, 04:24 PM

one up for kelly

kkim · April 6th, 2009, 05:04 PM

So, Kerry... for clarification, besides sending me one for evaluation (thank you, thank you, thank you

), are you still looking for someone in your area to bring their bike with a standard AP system in for testing and documentation?

If so, someone should jump on this!!

kbryant · April 6th, 2009, 05:06 PM

Quote:

Originally Posted by kkim

Damn, Kerry... that would be awesome!

Though I have no access to a mechanical dyno to prove my findings, I'll start tuning up the ole butt dyno right away!!

mahalo, sir!

woohoooo!!

I'll mail you one tomorrow. The Dyno is simply one tool we use. It's always important (sometimes even more important) to use "the ole butt dyno" whenever possible. If you can't feel it, sense it, listen to it, it really doesn't matter what the Dyno says. Should be the same jetting with the Nozzle only. Will run richer with the billet insert installed.

kbryant · April 6th, 2009, 05:09 PM

Quote:

Originally Posted by kkim

So, Kerry... for clarification, besides sending me one for evaluation (thank you, thank you, thank you

), are you still looking for someone in your area to bring their bike with a standard AP system in for testing and documentation?

If so, someone should jump on this!!

Yes. Leave it with us for a day or two. That way we can test and gather data on the Dyno and Sound Meter as well.

Jiu Jitsu Player · April 6th, 2009, 05:09 PM

If I was back in so-cal I would be all over this!!! (probably help if I had an area-p, but still!)

kbryant · April 6th, 2009, 05:09 PM

Quote:

Originally Posted by CaliGirl

I would love to leave you my bike for testing.....I think I need to get an actual AP exhaust first

Well we can sure help you with that if you like

kkim · April 6th, 2009, 05:14 PM

Last question... I promise... well, not really.

this was implied, but not stated in your first post... this module will work in the mufflers for both generations of 250s, is that correct?

Snake · April 6th, 2009, 05:15 PM

Kerry,
Can the silencer be used with the flat end muffler as well?

I don't have an Area P on my bike yet but hope to get one as soon as it comes out for the 07 & older bikes.

kbryant · April 6th, 2009, 05:45 PM

Quote:

Originally Posted by kkim

Last question... I promise... well, not really.

this was implied, but not stated in your first post... this module will work in the mufflers for both generations of 250s, is that correct?

Yes, implied and stated.

Fits all.

kbryant · April 6th, 2009, 05:45 PM

Quote:

Originally Posted by rcuriel

Kerry,
Can the silencer be used with the flat end muffler as well?

I don't have an Area P on my bike yet but hope to get one as soon as it comes out for the 07 & older bikes.

Nope. Only works with the Turn Down Exit Tips.

TrueFaith · April 6th, 2009, 09:22 PM

You say it "should be the same jetting" with the nozzle only, but will run rich with both pieces installed. Do you have data on the difference in decible reduction using just the nozzle compared to using both the nozzle and billet? I have no intention of messing with my Area-P non-quiet core, since I love the exhaust sound as it is and don't consider it too loud compared to some of the bikes that blast by my house every day. Just curious.

kbryant · April 7th, 2009, 08:34 AM

Quote:

Originally Posted by TrueFaith

You say it "should be the same jetting" with the nozzle only, but will run rich with both pieces installed. Do you have data on the difference in decible reduction using just the nozzle compared to using both the nozzle and billet? I have no intention of messing with my Area-P non-quiet core, since I love the exhaust sound as it is and don't consider it too loud compared to some of the bikes that blast by my house every day. Just curious.

On other bikes we've tested, it is normally 2 dbA with the Nozzle only and another 5 - 6 dbA reduction with both the Nozzle and Billet Module installed. Total reduction is normally 6 - 8 dbA. In this case, the Billet Module causes the rich condition as it restricts exhaust flow to attenuate sound.

camaroz1985 · April 7th, 2009, 10:15 AM

Dang I was perfectly satisfied with keeping the stock exhaust because it was quiet. Now this and the quiet core are looking very very tempting. Why did you have to post this?

TrueFaith · April 7th, 2009, 04:01 PM

Quote:

Originally Posted by kbryant

On other bikes we've tested, it is normally 2 dbA with the Nozzle only and another 5 - 6 dbA reduction with both the Nozzle and Billet Module installed. Total reduction is normally 6 - 8 dbA. In this case, the Billet Module causes the rich condition as it restricts exhaust flow to attenuate sound.

Thanks for the info, Kerry. After owning the Standard Area-P I wouldn't give up that beautiful exhaust sound for anything. I don't know why everyone thinks it's so loud. I can throttle down while cruising through town and nobody even raises an eyebrow, but open her up on the back roads around here and it's like having a "monster in your pocket". Lots of really loud Harleys out my way and most of the time people are too busy bitching about them to even notice me. Mad reps to you for manufacturing the best-sounding pipe on the planet.

VeX · April 9th, 2009, 01:03 AM

Oh! Oh! When are you planning this test? I live in San Diego, but could drop my bike off and hitch a ride back down to San Diego (I have a friend that goes down from Pasadena to San Diego every other week). I would be down for it as I am one of those that is annoyed by the incredibly LOUDNESS of the standard core muffler (Trying to casually ride through city streets at 5am is... Noisy).

kkim · April 9th, 2009, 01:06 AM

Vex... great idea!!

PM Kerry right away to get dibs on this if he's still looking.

gl, man!

Blue Ninja 250R · April 9th, 2009, 03:12 AM

Wonder will Kerry send me a full AP together with DEI for test too......

Say that you will Kerry, PLEASE.........

kbryant · April 9th, 2009, 08:37 AM

Quote:

Originally Posted by VeX

Oh! Oh! When are you planning this test?

Basically whenever someone wants to drop their bike off at our facility for a few days.

kkim · April 9th, 2009, 02:28 PM

Quote:

Originally Posted by kbryant

Basically whenever someone wants to drop their bike off at our facility for a few days.

Go, Vex, Go!!

Blue Ninja 250R · April 9th, 2009, 07:39 PM

Quote:

Originally Posted by kkim

Go, Vex, Go!!

Yes! Vex. Make sure you're there before me......

miks · April 9th, 2009, 07:39 PM

$50 on Vex!

1hardryder4life · April 10th, 2009, 09:32 AM

very interesting design. Ima order one of these.

08_250R · April 10th, 2009, 05:25 PM

Kerry,

What are the odds on a new quiet end plate? something like this, sorry for the poor photoshop, but you get the point.

kbryant · April 10th, 2009, 06:34 PM

Quote:

Originally Posted by 08_250R

Kerry,

What are the odds on a new quiet end plate? something like this, sorry for the poor photoshop, but you get the point.

Very creative. I do get the point.

Without getting too much into the engineering & design aspects and to make a long response short - you have the Billet portion of the module mounted backwards. The flow dynamic is designed for the taper to be in the inlet side. The D.E.I. is designed specifically for the turn down tip and merge from the core to the exit tip. The primary goal was to make a complex engineering component, into a simple, affordable, modular unit with multiple levels of adjustment.

kkim · April 10th, 2009, 07:57 PM

Kerry,

Is it be possible for one to "tune" that billet piece by drilling the holes out to a bit larger diameters if you didn't mind a little more sound and wanted a little less restriction?

08_250R · April 10th, 2009, 08:53 PM

Quote:

Originally Posted by kbryant

Very creative. I do get the point.

you have the Billet portion of the module mounted backwards.

I understand what you are saying and I figured as much because the drilled holes look like a velocity stack. As I said, you get the point, I understand it may be a pain, but a new end plate would be nice.

Thanks

kbryant · April 10th, 2009, 09:48 PM

Quote:

Originally Posted by kkim

Kerry,

Is it be possible for one to "tune" that billet piece by drilling the holes out to a bit larger diameters if you didn't mind a little more sound and wanted a little less restriction?

Yes absolutely! We have 8 other versions of these for different displacement applications, core diameters, turn down tip diameters, etc.. Primarily the difference is indeed with the outer holes and inner main primary hole. We have others with different degrees of taper. We even have some where leaving the CNC burr(s) around the outer holes (gatlins if you will), helps with the reversion affect. By all means, experiment away! Since you are being somewhat "sponsered" on this project, we can always send you another one if you go too far and/or want to go back to the way it was.

kkim · April 10th, 2009, 10:13 PM

Kerry,

Thanks for the encouragement to experiment. Once I get it installed, I'll be able to tell how I want to play with it, if at all.

The thought came from modifying my dirt bike stock muffler. Removing the stock baffle yielded an exhaust that was too loud for my taste and reinserting the baffle proved too much of a restriction and "choked" the bike. The solution was to drill some additional holes in the baffle to reduce the back pressure and end up with a bit freer flowing stock exhaust, but not too loud for my tastes. I admit the jetting needed to be tweaked a bit more than what the normal solutions called for, but the result has yielded a bike with increased power over stock w/o the annoying, neighbor disturbing sound level an uncapped exhaust brings.

I hope I can come to the same sort of solution using the end cap you've provided. I really like the quiet core muffler, but at times wish it was a tad quieter. (I'm sure it's age related

) The end cap will hopefully allow me to tune the sound vs power level to perfection for me.

mahalo for "sponsoring" me the parts to experiment.

On an unrelated note, I know I'm only one of your many, many customers, but if I can ever be of help to you on a professional or non professional level, please do not hesitate to ask.

1hardryder4life · April 13th, 2009, 08:48 AM

Ordered my kit last friday, part arrived the next day on saturday. thats what im talking about! should have it installed tomorrow to give it a test and report back.

1hardryder4life · April 15th, 2009, 10:13 AM

Curious to know if you got yours and tried it out yet, Kelly?

kkim · April 15th, 2009, 10:41 AM

Quote:

Originally Posted by 1hardryder4life

Curious to know if you got yours and tried it out yet, Kelly?

Yes, I did get mine (thank you, Kerry), but have been busy with work (imagine that) and have not been able to install and test. Looking forward to your impressions.

t-rav_12 · July 15th, 2012, 10:51 AM

...well, Kkim?... After 3 yrs of testing?
(talk @ reviving a thread)

cuong-nutz · July 15th, 2012, 11:08 AM

Quote:

Originally Posted by t-rav_12

...well, Kkim?... After 3 yrs of testing?
(talk @ reviving a thread)

KKim is no longer around but I recall someone else installing the DEI and saw reduction of a few DBs.

April 6th, 2009, 02:39 PM	#1
kbryant Area P Name: Kerry Location: SoCal & South Florida Join Date: Dec 2008 Motorcycle(s): Too many to list Posts: 439	Area P - Quiet Module - D.E.I. We've had requests from those who have purchased the Standard Muffler and are looking to quiet it down without the additional expense of having to purchase the Long Quiet Muffler. Attached are pictures of our "D.E.I." (Dual Element Insert) which debuts on this forum. We designed a first generation of this sound attenuator many years ago for a company called Jardine (it was called QMI or Quiet Module Insert). The D.E.I is a brand new product and far superior. It consists of a 304 series stainless steel "Nozzle", and a 6061 billet cnc aluminum "Module" insert with high temp O-Ring. Essentially, it installs/inserts into your turn down exit tip and is secured by a single screw. You simply drill a hole in the tip and install the DEI. It comes with detailed instructions and is very easy to install. It can be used as simply the "Nozzle" by itself. Or for further attenuation of sound, both the Nozzle and Billet module together. It will reduce decibel levels by 6 - 8 dbA. You can remove it completely also, as the small 5.5mm hole that you drill in the tip will not affect anything and puts the power/sound right back where you started. Although it will reduce the sound level, it will also reduce the power level that you gained. It will not be nearly as quiet and/or perform as well as the Long Quiet Core Muffler. But for those people looking to reduce the sound level of their Standard muffler, this is a less costly solution. Intro price is $39.95. Shipping cost is $6.00. It comes in a small box and is shipped by Priority Mail. We do not have specific test data on it for the 250R (we've tested this unit on a wide array of other models from Offroad to large displacment sportbikes). If someone would like to drop their bike off at our facility, we will install one at no charge to document specific test results. Last futzed with by kbryant; April 6th, 2009 at 02:43 PM. Reason: sentence

April 6th, 2009, 04:23 PM	#5
CaliGirl Curiosity is a Killer Name: CG Location: So Cal Join Date: Dec 2008 Motorcycle(s): 08 Ninja 250 Posts: 102	I would love to leave you my bike for testing.....I think I need to get an actual AP exhaust first __________________________________________________

April 6th, 2009, 05:09 PM	#10
Jiu Jitsu Player Live 2 Ride Forced 2 Work Name: Chris Location: Guam Join Date: Mar 2009 Motorcycle(s): 2008 RED 250r Posts: 386	If I was back in so-cal I would be all over this!!! (probably help if I had an area-p, but still!) __________________________________________________ SAVAGE MODE: [ON] OFF www.7milesdown.com

April 9th, 2009, 07:39 PM	#26
miks I'm lovin' it. Name: Mike Location: Melb, Australia Join Date: Feb 2009 Motorcycle(s): '09 Black 250R Posts: A lot.	$50 on Vex! __________________________________________________ Son: When I grow up I want to ride a motorbike. Father: You can't do both son.

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April 6th, 2009, 02:46 PM	#2
kkim Join Date: Nov 2008 Posts: Too much.	would this work on the quiet core mufflers as well?

April 6th, 2009, 04:03 PM	#3
kbryant Area P Name: Kerry Location: SoCal & South Florida Join Date: Dec 2008 Motorcycle(s): Too many to list Posts: 439	Sure would Kelly. It should have the same basic affect. I just don't know what the "performance" results would be on the Long Quiet Muffler. How about I send you one for "R&D" purposes (no charge) and you tell me what you think?

April 6th, 2009, 04:07 PM	#4
kkim Join Date: Nov 2008 Posts: Too much.	Damn, Kerry... that would be awesome! Though I have no access to a mechanical dyno to prove my findings, I'll start tuning up the ole butt dyno right away!! mahalo, sir! woohoooo!!

April 6th, 2009, 04:24 PM	#6
stroked59 ninjette.org member Name: Tim Location: O*C California Join Date: Dec 2008 Motorcycle(s): 08 Ninja 2505 Posts: 98	one up for kelly

April 6th, 2009, 05:04 PM	#7
kkim Join Date: Nov 2008 Posts: Too much.	So, Kerry... for clarification, besides sending me one for evaluation (thank you, thank you, thank you ), are you still looking for someone in your area to bring their bike with a standard AP system in for testing and documentation? If so, someone should jump on this!!

April 6th, 2009, 05:14 PM	#12
kkim Join Date: Nov 2008 Posts: Too much.	Last question... I promise... well, not really. this was implied, but not stated in your first post... this module will work in the mufflers for both generations of 250s, is that correct?

April 6th, 2009, 05:15 PM	#13
Snake ninjette.org certified postwhore Name: Rick Location: Alexandria, Louisiana Join Date: Jan 2009 Motorcycle(s): 05 Blue Ninja 250 Posts: Too much. MOTY - 2017, MOTM - Jan '19, Oct '16, May '14	Kerry, Can the silencer be used with the flat end muffler as well? I don't have an Area P on my bike yet but hope to get one as soon as it comes out for the 07 & older bikes.

April 6th, 2009, 09:22 PM	#16
TrueFaith ninjette.org sage Name: Wayne Location: Brookfield, MA Join Date: Nov 2008 Motorcycle(s): 2011 Honda CBR250R Posts: 585	You say it "should be the same jetting" with the nozzle only, but will run rich with both pieces installed. Do you have data on the difference in decible reduction using just the nozzle compared to using both the nozzle and billet? I have no intention of messing with my Area-P non-quiet core, since I love the exhaust sound as it is and don't consider it too loud compared to some of the bikes that blast by my house every day. Just curious.

April 7th, 2009, 10:15 AM	#18
camaroz1985 ninjette.org certified postwhore Name: Ryan Location: Carlisle, PA Join Date: Nov 2008 Motorcycle(s): 2008 WR250R, 2006 Ural Raven (Sold), 2009 Versys Green (Sold), 2008 Ninja 250R Green (Sold) Posts: A lot.	Dang I was perfectly satisfied with keeping the stock exhaust because it was quiet. Now this and the quiet core are looking very very tempting. Why did you have to post this?

April 9th, 2009, 01:03 AM	#20
VeX That's me! Name: TJ Location: Ames, IA Join Date: Nov 2008 Motorcycle(s): 2008 Ninja 250r (Tis blue), 2008 CBR600RR Posts: 454	Oh! Oh! When are you planning this test? I live in San Diego, but could drop my bike off and hitch a ride back down to San Diego (I have a friend that goes down from Pasadena to San Diego every other week). I would be down for it as I am one of those that is annoyed by the incredibly LOUDNESS of the standard core muffler (Trying to casually ride through city streets at 5am is... Noisy).

April 9th, 2009, 01:06 AM	#21
kkim Join Date: Nov 2008 Posts: Too much.	Vex... great idea!! PM Kerry right away to get dibs on this if he's still looking. gl, man!

April 9th, 2009, 03:12 AM	#22
Blue Ninja 250R ninjette.org member Name: Stanley Location: Kedah, Malaysia Join Date: Feb 2009 Motorcycle(s): Kawasaki Ninja 250R 2008 Posts: 80	Wonder will Kerry send me a full AP together with DEI for test too...... Say that you will Kerry, PLEASE.........

April 10th, 2009, 09:32 AM	#27
1hardryder4life ninjette.org member Name: TBoz Location: New York Join Date: Apr 2009 Motorcycle(s): Nothing Posts: 93	very interesting design. Ima order one of these.

April 10th, 2009, 05:25 PM	#28
08_250R ninjette.org member Name: Adam Location: Chippewa Falls Join Date: Mar 2009 Motorcycle(s): 08 Green 250R Posts: 29	Kerry, What are the odds on a new quiet end plate? something like this, sorry for the poor photoshop, but you get the point.

April 10th, 2009, 07:57 PM	#30
kkim Join Date: Nov 2008 Posts: Too much.	Kerry, Is it be possible for one to "tune" that billet piece by drilling the holes out to a bit larger diameters if you didn't mind a little more sound and wanted a little less restriction?

April 10th, 2009, 10:13 PM	#33
kkim Join Date: Nov 2008 Posts: Too much.	Kerry, Thanks for the encouragement to experiment. Once I get it installed, I'll be able to tell how I want to play with it, if at all. The thought came from modifying my dirt bike stock muffler. Removing the stock baffle yielded an exhaust that was too loud for my taste and reinserting the baffle proved too much of a restriction and "choked" the bike. The solution was to drill some additional holes in the baffle to reduce the back pressure and end up with a bit freer flowing stock exhaust, but not too loud for my tastes. I admit the jetting needed to be tweaked a bit more than what the normal solutions called for, but the result has yielded a bike with increased power over stock w/o the annoying, neighbor disturbing sound level an uncapped exhaust brings. I hope I can come to the same sort of solution using the end cap you've provided. I really like the quiet core muffler, but at times wish it was a tad quieter. (I'm sure it's age related ) The end cap will hopefully allow me to tune the sound vs power level to perfection for me. mahalo for "sponsoring" me the parts to experiment. On an unrelated note, I know I'm only one of your many, many customers, but if I can ever be of help to you on a professional or non professional level, please do not hesitate to ask.

April 13th, 2009, 08:48 AM	#34
1hardryder4life ninjette.org member Name: TBoz Location: New York Join Date: Apr 2009 Motorcycle(s): Nothing Posts: 93	Ordered my kit last friday, part arrived the next day on saturday. thats what im talking about! should have it installed tomorrow to give it a test and report back.

April 15th, 2009, 10:13 AM	#35
1hardryder4life ninjette.org member Name: TBoz Location: New York Join Date: Apr 2009 Motorcycle(s): Nothing Posts: 93	Curious to know if you got yours and tried it out yet, Kelly?

July 15th, 2012, 10:51 AM	#37
t-rav_12 ninjette.org member Name: travis Location: Belton, Missouri, USA Join Date: Jul 2012 Motorcycle(s): '06 Ninja 2-Fitty (DD Commuter); '05 Ninja 2-Fitty (Track CCS#112); '94 YZF 7-FittyR (Missile/Backroad Bomber) Posts: 11	...well, Kkim?... After 3 yrs of testing? (talk @ reviving a thread)