another mazdaspeed CAI thread

[www.cp-e.com]

Very nice design!

Thanks Speedy!! (bow)


Jordan

 

[C'ville]

Amendment # I "Freedom of speech" (rockon)

stretch does not even own a speed3 he has not seen a MS CAI in person or a CPE it is a shame that someone speeds so much time bashing a product the know nothing about.

 

[RonTonkinMazda]

nobody is saying your intake is not good infact i think its a great intake but it seems people are trying hard to discredit the MS Product trust me there is room for more than 1 company to provide intakes.

 

[MSAxela]

Very nice. I plan on going with mostly cp-e parts they are very good and have been tested throughly. I have a Cp-e CAI ordered currently and plan on getting the turbo back system too in due time. Jordan and everyone at Cp-e keep up the good work. (2thumbs)

 

[SwampAss]

Amendment # I "Freedom of speech" (rockon)

That only applies the goverment suppressing our right to speak freely. Doesn't apply to "we the people" in the same sense. (lick)


I wish I had video taped my installation of the Mazdaspeed CAI. I would have surely won America's funniest home videos $100,000 prize. Think Keystone cops meets 3 stooges. I spent more time trying to "fish" for s*** I dropped in the engine bay. Luckily, most of the items were non metallic so my magnet was rendered useless.

Seat of the pants dyno feels like a significant power increase. To me, it feels like a power increase in line with having my VW 1.8T chipped vs. unchipped.
I don't doubt the validity of some of the comments made in recent posts. For the time being, I will enjoy my CAI as it will likely be my only performance mod. If problems arise, I'll address them. As for now, I plan to have fun with my new found performance.

p.s. THanks CPE for showing your dedication to making a quality product. It's a shame Mazda didn't use your design to head off possible future issues.

Either way, I am pleased with my purchase. It was $400 less than my GIAC VW chip and feels every bit as significant.

 

[C'ville]

Yea yea, yada yada J/K, I'm just saying that I like people who question authority. wait is that what Im trying to say.Nevermind ...you keep it coming Stretch.(thumb)

Oh and swamp let me know if you decide to get rid of those rims..

 

[MSAxela]

Grats on the CAI SwampAss hope you do enjoy it. Not matter what product you go with enjoy it and what it can do for your car. If problems arise let others know so we can all be aware of possible issues. Have fun these cars are all about that. (drive2)

 

[SwampAss]

I'm not ready to lose my ass for a while with those wheels.

 

[C'ville]

I hear you brother...Just dont hate me if I end up with the same ones..(cabpatch)

I'm not ready to lose my ass for a while with those wheels.

 

[SwampAss]

Oh, and my car power wheelies in 2nd now. I had a tough time finding the balance point, but I rode it out to about 100.

 

[flyrevs]

Mazda CAI diameter @ MAF : 2.64"

Just sharing info here, not passing any judgements on anything so no flames - ok?
OK I used the ratio method to figure out the CP_E CAI tube diameter @ MAF.
Some please measure their CP-E and I'll update!!!!
here's the math for the CP-E CAI (ratio) 179/3" = 149/X X=2.50" Looks like the CP-E is about 1/4 wall thickness so this pretty much agrees with my visual calipers.
So to recap...
Mazda stock diameter @ MAF : 2.68"
Mazda CAI diameter @ MAF : 2.64" - (0.04" Smaller than stock)
CP-E CAI diameter @ MAF 2.50" - (0.18" Smaller than stock)

 

[Antoine]

Interesting info....Attn Moderators...Make sure this thread stays on topic and remove any useless posts. Thanks.

 

[javanc]

Antoine, but then well be down to a 3 post thread, and all the fun will be gone LOL.

 

[camrycev6]

I have my Dyno results:

I will be getting the file via email tomorrow, so I can post more data then. For now, here are the raw numbers:

Max Power = 257.4
Max Torque = 271.9

@ 4.65 RPMS, A/F = 11.3

 

[Speedy3]

Speedy, I think the your "scanner dyno" results and these real-life dyno results are confirming something: that the ECU doesn't know what it's doing anymore. The reported gains from users are anywhere between 10hp and 35hp!

I'd estimate the gains from relieving the pressure drop in the intake path should amount to 15-20hp; anything more or less is likely coming from the air/fuel ratio changing. Either it'll lean it out (see above post) and you'll make more power than expected, or the car will get confused and make too large of a correction- and perhaps even pull timing- resulting in lower-than-expected gains. See, when you have the MAF after a bend, the correction needed at an RPM and load will not be the same as the same RPM but a different load. The ECU can't deal with this, but it tries, and these "tries" may be why power gains are so inconsistent.

Hey stretch, sorry, I have been on another thread through all this. I did respond to Dread with my A/F ratio data. The following is on another thread:

http://www.mazdas247.com/forum/showthread.php?t=123662057&page=9
"http://www.mazdas247.com/forum/showthread.php?t=123662057&page=9"

It turns out to be fairlly difficult to determine the A/F ratio from the SW, but I was able to get some useful data, then derive the commanded A/F ratio.

First off, the numbers indicate that the First O2 sensor is measuring the A/F to be about 8% leaner than stock with the MS CAI. The good news is that the ECU is commanding a decrease in the A/F ratio (Richer) by about 6% to compensate. The Commanded A/F ratio under peak load in stock config was about 12.2. The Commanded A/F ratio under full load with the MS CAI was about 11.5. This is the commanded A/F ratio based on compensation learned from feedback while previously driving, so it seems, it is compensating for the MS CAI. I also noticed during the dyno tests that almost the same density of black smoke was coming out of the exhaust in stock vs with MS CAI. So, despite the difference in diameter of the MAF housing (as posted by flyrevs and cp-e) and the increase in air-flow from stock to MS CAI, it seems the MS 3 ECU is adjusting the A/F ratio to keep the car from running too lean. Initial results look like it is about 2% leaner.

Here's some OBDII data on the "Commanded A/F Ratio" with the MS CAI. From my calculations, the car is actually running 2% leaner than this.

 

[C'ville]

So this means what?