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Old 10-02-2013, 12:20 PM   #1
Scooby Specialist
Member#: 158888
Join Date: Sep 2007
Chapter/Region: MAIC
Location: Baltimore area
2011 STi EFR 7163!
07 GT30 WRX sold :/

Default Physics Help!! 2.4inch Turbo . Benefit to get a 3" inlet pipe et intake??

Ive read tons of topics before on whether to choose a 3inch inlet or 2.4 on the turbo but what if 2.4 was the only choice and since I need to buy a new inlet, I buy a 3inch inlet (with 2.4 reducer) mated to a 3 inch "big maf" air intake?

I am trying to think of the physics but I am A not an engineer and B rusty on even the basics these days.

Would I be close in assuming that the larger the diameter of Turbo inlet pipe and Intake, the less of a vacuum(meaning less work for compressor)?

I understand that the turbo opening is 2.4"***8960; but if I were to "suck" (I know, science does not suck) air through a 2.4"***8960; washer and then a 2.4"***8960; hose that was 5 feet long, it would take more effort to suck air through the hose than the washer therefore reducing the volume and/or velocity? Which in turn would mean a 3" hose after that 2.4" washer would be more efficient...Right?

Hahaha I hope I dont get too bad.

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