This past weekend I did an intake test at a local shop. I tried 6 different intakes with mixed results.

I did 2 pulls with each intake, and left the car running between runs and while changing intakes. I also sampled a/f via a wideband and will post that info as well.

Setup (with relevant modifications):

itr motor
AC
no power steering
stock itr wheels with azenis at 40psi
itr tranny
ats 4.9 final drive
ats lsd
toda valve springs
portflow Ti retainers
stock itr cams
toda cam gears set at 0,0
10.6:1 compression ratio (stock)
Power Enterprise timing belt
hytech header
2.5" mandrel bent exhaust piping exiting behind the passenger's door (with 2 inline resonators) - no catalytic convertor
290cc prelude injectors
hondata s200 with a baseline program set for 91 octane from DSR in California
All runs were on 93 octane
stock base timing at distributor

Here goes.....

runs 1 & 2 (stock itr intake elbow and stock itr filter - open element)



runs 3 & 4 (itr AEM cold air intake)



runs 5 & 6 (M's carbon fiber intake with stock itr elbow)



runs 7 & 8 (HKS filter and elbow)



runs 9 & 10 (Mugen dc2 96 spec box, with greddy filter and stock itr elbow)


runs 11 & 12 (Greddy intake and elbow)



And as a further baseline, here's a plot of the greddy intake <run 60> from the last time I slapped it on at this dyno (vs generic short ram <run 59&gt. No changes were made since the last time I was at this dyno - and temperatures were similar.



Overall, I was quite surprised with the M's. It is very easy to install and has great numbers - without any fears of hydrolock.

I was also impressed by the AEM CAI due to the price.

The mugen is still my favorite though - I suspect it would've had equal or better # compared to the M's... but I didn't have the mugen filter to use with it.

Greddy isn't among any of my favorite name brands, but it still had decent numbers as well.

All of these pulls were conducted at http://www.mainstreamperformance.com They were very nice, extremely professional, super clean shop, and priced VERY economically. Call them today and tell them you saw them on honda-tech!

Also, many and thanks to kengs - whose many intakes were used for this test.

 

Thanks for doing the test!!!

Thanks to shane too

 

Very nice writeup! I was quite surprised on the gains from the stock box.

 

Great info Thanks for doing the test.. im sure this will be used to support information for a long time.

 

Nice job Ken.

 

Nice findings. I have one question though. On the Mugen intake, was it sealed where the intake arm meets the air box?

 

 

Adjust the damn cam gears Ken.

Austin

 

http://www.we-todd-did-racing....D.jpg

this is a 98 spec jdm itr with a short ram aem intake and open headers

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Comp97GSR &raquo;</TD></TR><TR><TD CLASS="quote">Nice findings. I have one question though. On the Mugen intake, was it sealed where the intake arm meets the air box? </TD></TR></TABLE>

Thats what I'm thinking. I'm having a hard time visualizing the Greddy filter to be anything like the Mugen.

And also, whats up with the torque numbers on the Mugen test? Heat soak robbed it of 11lb/ft?

And one last thing...Would you happen to have and pictures of the M's intake?

 

Wow, I'm impressed with the M's performance.

for taking the time to do this.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EKology &raquo;</TD></TR><TR><TD CLASS="quote">

And also, whats up with the torque numbers on the Mugen test? Heat soak robbed it of 11lb/ft?

</TD></TR></TABLE>

Look at the spike at ~8,400rpm, it looks like the tach signal was lost for a moment, the new dynojet runviewer software shows a spike when the rpm is as the scale if the tach signal is momentarily lost, if Ken goes back and shows them as speed the spike will go away.

Austin

 

" was quite surprised with the M's. "
Where can I get info on this product?

 

good test

 

every motor is gonna react differently but atleast you get to see what works best your your set up. I will always stand by the AEM as it seems to work great on my car compared to stock. That Ms looks like it has some nice smooth mid range on your motor as well.

thanks for taking the time to do some real research


Modified by RTW DC2 at 9:09 PM 8/4/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by machgo5go &raquo;</TD></TR><TR><TD CLASS="quote">" was quite surprised with the M's. "
Where can I get info on this product?</TD></TR></TABLE>

The M's (aka the Gruppe M/K&N Japan) Filter Ramcharger:







I'm selling BOTH intakes (the M's and the Mugen); I will have a FS thread up tonite...

Many thanks to Ken for testing these suckers out

Shane, who <u>really</u> needs to avoid impulse buys of JDM bling

 

M's intake? maybe I live under a rock, but I have never seen that (till now)

 

AEM&gt;j00!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .D2 &raquo;</TD></TR><TR><TD CLASS="quote">M's intake? maybe I live under a rock, but I have never seen that (till now)</TD></TR></TABLE>
Same here. So now there are J's and M's. I'm liking this lettering system.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Austin &raquo;</TD></TR><TR><TD CLASS="quote">Look at the spike at ~8,400rpm, it looks like the tach signal was lost for a moment, the new dynojet runviewer software shows a spike when the rpm is as the scale if the tach signal is momentarily lost</TD></TR></TABLE>

There are unusual spikes like that in three of the graphs. They throw off the max torque numbers, but apparently don't affect the horsepower curve.

 

The M's (aka the Gruppe M/K&N Japan) Filter Ramcharger:
GRUPPE M PRICING & APPLICATIONS
DC2/DB8 TYPE R '98SPEC 1800 $600.
Did think it cost that much!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by machgo5go &raquo;</TD></TR><TR><TD CLASS="quote">The M's (aka the Gruppe M/K&N Japan) Filter Ramcharger:
GRUPPE M PRICING & APPLICATIONS
DC2/DB8 TYPE R '98SPEC 1800 $600.
Did think it cost that much!</TD></TR></TABLE>

Well, it's a LOT cheaper than some of the other Gruppe M intakes

 

Wow... Suprised... I always thought the AEM CAI for the ITR was proven to lose HP over the stock ITR intake... Guess I was misinformed.

I already got an Icebox on the way, so oh well.

 

thats interesting..ive conduct a similar test, however with only 3 intakes, Stock, AEM CAI, and J's. (basically the same as the one SGT did a while back)

The AEM had the lowest numbers out of the three, with the J's being better than all. The stock one preformed better than the AEM CAI all thru-out the power band.

I guess each motor has different preferences.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxtasy &raquo;</TD></TR><TR><TD CLASS="quote">

There are unusual spikes like that in three of the graphs. They throw off the max torque numbers, but apparently don't affect the horsepower curve.
</TD></TR></TABLE>

Yeah, some bug in their program, I wish that they would fix it, looking it up it appears that they may have, there's a version 7.0.3.5 available now.

Austin