Quote:
Originally Posted by MazdaMatt
is there a simple formula for this? input target rpm and engine displacement, output intake length and width?
Are those theories taking into account low-throttle cruise, or only WOT?
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Tuning the intake on the upstream side of the throttle valve only impacts WOT operation. Tuning it downstream of the throttle impacts all phases, but is usually not a do-it-yourself project.