I own an AEM 3" (CAI) intake that is on my ITR along with several other bolt-ons that I will be tuning soon. I have access to a Dyno, but would like to get some insight on power made in comparison to intake length. I understand the motor has a "sweet spot" where it will make better power depending on the intakes length and diameter. My question is has anyone ever played with a CAI design and cut it down or modified it to try and make more power? I was considering hacking up my AEM intake and starting at a 40 inch length to see if I would make more power than it would make in its stock (CAI) form.

Note: I will be using a velocity stacj and the TB is a stock ITR along with the stock p-73 manifold.

 

a cold air(in bumper) intake system will produce a pre vtec hump in power and tq. a shorter one will not. My testing on a 00 itr going from the aem cold air to a saamco intake pipe with BPi stack showed minimal gains and lost the "hump". Something in the air flow hermonics if i understand correctly from others posts about this.

 

Thank you for the intellegent response. Anyone else?

 

Try some 4 inchers as well!

 

I know I really should. I made the post on a 3" just because I already own it. From what I understand I will pick up a few WHP with a 4 inch, but I just want to keep this setup somewhat basic. It won't be tracked a lot and will just be a fun car I want to make 175-180 whp on. Anything more power wise is a plus for me. I also have a 98+ Spec JDM ITR 4.785 FD trans that will along with this setup so it should be fun.

 

I suggest doing some reading on the effects of intake length, then finding a formula which will get you in the ball park of the length you need to optimize your setup.

 

Sounds like a plan. I still have a bit research to do, but I may fab up a shorter 3 inch pipe and try that also.