Mythbuster... CAI = No real HP gains.... its been tested with a fan, with direct cool, with an extended pipe going to a cold source... Actually the testing determined that the HP was better with stock intake. Oiled filters vs. non-oil was also a flop. I have AEM CAI and it sounds good and looks good but that is about it.

Beating that dead horse again...

EDIT: Usual linking isn't working, motoIQ did a decent comparison should be the top result.
https://www.google.ca/search?q=370z%...0dyno%20motoiq

There are many more independent dyno's but I thought this was most thorough. Certainly not the most amazing gains but an improvement over stock.

Cool, looks like these things are putting down good numbers.

http://www.the370z.com/tuning/70920-...ing-uprev.html

Are you saying that people are lying about there dyno results?? There are numerous reports of HP gains of 10-15whp over stock. How is this not a gain.....

(Waiting anxiously for a response..) :eekdance:

There are a couple here who are on their own agenda with CAI's. 99.9% of us have shown large gains. I'm just waiting for these results.

I think that people forget that the acronym CAI stands for COLD air intake

Of course you are going to make more power , cold air is more dense than hot air.:icon14:

^ I have yet to see proof that a CAI produces lower IAT than our stock intakes...:stirthepot:

Seriously though, I would like to see proof if they do. Smoother air I can buy into more easily but that doesn't make a lot of difference until very high rpms. Sound and looks should be the dominating factors when going with a CAI.

If you guys need proof like that to justify CAI I suggest a easier game like checkers maybe.

I never said some gains weren't possible, but it is not because the air is significantly COLDER versus stock as you claim...:rolleyes:

Show me all the high performace cars that come with an aftermarket style CAI from the factory...the automotive engineers all around the world didn't screw the pooch that bad.

I'm not hatin' on CAI either. I have had them on my previous vehicles.

I take it you aren't an engineer? And for the record I whoop a$$ at checkers btw :tup:

Back on topic now...still looking forward to results OP.

The problem is you guys need so much reassurance about products and what they do I'm surprised anything get sold,And I'm not a engineer but have been working on cars for a living for 28 years and don't need to be told what is what or any reassurance on what works and what doesn't my Rep and opinion in this community speak for them selves.

The thing about our cars is the stock filter location gets poor airflow... just like our brakes, and the diff, lol... Alot of muscle cars, higher end car, Vipers, Z06 have ram air, which I guess you could say is like a CAI...

I can see the shorty intakes for our cars aren't really going to be any better than stock. But the intakes that fit over the crash bar, or the other style that fit down into the wheel well definitely make power. I don't see why people are still confused about this when it has been dyno proven...

it doesn't! What it DOES do is it limits the restriction and turbulence of air flow. Stock intake tubes have ribbing type plastic therefore creates air turbulence, also it doesn't have smooth air flow into the upper intake manifold. Most of the cold air intakes are promoting cold air intake, but what it is really accomplishing is smooth air transition from filter to manifold. No ribbed edges and no turbulence creates even air flow.

There's nothing wrong with a little reassurance before you spend a good chunk of cash. If no one needed reassurance then there's no point in ever dynoing a car...just data log your A/F ratio's while you drive around town and adjust the maps accordingly. No need to prove your HP gains to anyone and say "just trust me".

I'm not doubting your rep, automotive experience, or ability to work on cars but the physics has to make sense for a claim to hold water (or in this case air).

HP gains are possible with a CAI but NOT because the air coming in is any COLDER. That's a marketing ploy that just appears logical.

I'm gonna stop repeating myself now. My apologies to the OP for derailing further, happy Sunday!

Please don't make another one of these, it was closed for a reason.

http://www.the370z.com/nissan-370z-g...-hp-gains.html

or this

http://www.the370z.com/nissan-370z-g...ir-intake.html

Don't be another GSXR.

The G3 and Takeda HP increase are probably result of the ram air effect more than "cold air" (especially on g35/37).

That being said cold air does have an effect. In this case cold air being ambient temperature vs engine bay temperature. Cold air is dense due to the molecules low energy level vs warm air whose molecules are more active. The higher volume of air entering your throttle bodies is sensed by your MAF which tells your ECU to increase the amount of fuel thus more HP. In an essence same thing forced induction does forcing MORE air molecules into the system only to a much larger scale.

And before you start trying to poke your chest out being you are an "engineer" I have a degree in aeronautical engineering... :tup: