HKS SRI Intake Kit

[invader166]

Originally Posted by alias06

The most air that you can suck into the engine N/A is just what the engine is willing to take in the amount of time it can when the valves are open. Mathematically the theoretical amount of efficiency you can get is 100% which could theoretically be obtained by a stroker kit and free flowing intake/exhaust tuned to a desired RPM.

Realistically without F/I you will never break the 100% volumetric efficiency or even come close.

I respectfully disagree on that.

You are correct in saying that the theoretical amount of air that can be drawn in the engine is 100%. But, that's only THEORETICAL! In reality it's probably more along the lines of 80%-85%, but that's besides the point.

On a naturally aspirated engine, with a well designed induction system, you can definitly break that 100% mark without forced induction, using a process called pressure wave tuning. Definitly look it up if you don't believe me. I'm not making this up.