Intake questions

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Nov 28, 2007 | 07:40 AM

#16

justboosted02

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From: northeast

Quote:

Originally Posted by SPANKED

Like I said $300+ for an intake to me is a waste...I'd either do Buschur cone filter or my setup which is a works filter with cutout in the side of my intake box.

Here is the thread on the filter box cutout...

https://www.evolutionm.net/forums/sh...d.php?t=244028

...minimal increase as far as the annoying PPSSSSSHT sound and doesn't draw too much hot air from the engine cause the cutout is on the opposite side.

ARC is just overpriced jdm ricer bling

Nov 28, 2007 | 09:11 AM

#17

spdracerut

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From: Hermosa Beach, CA

Quote:

Originally Posted by cij911

There definitely is an advantage of CAI for a NA motor, but for turbo'd cars we heat the intake up (from the turbo) and then cool via the intercooler.

Colder air is perhaps even MORE benefical for a turbo car.

The equation for a compressor is: shaft work (power) = compressor inlet temp * mass flow rate * constant specific heat * (pressure ratio)^((k-1)/k)

So, for a given shaft work/power/power coming for the turbine wheel, if you lower the compressor air inlet temp, then you get higher mass flow rate and/or higher pressure ratio (more boost).

Basically, colder air into the turbo, you'll get faster spool and more power.