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Re: Few questions "intakes"/ "pistons"
Minimal N/A. F/I is another story, as you're blowing air through the intake as opposed to sucking.
Now get those dirty thoughts out of your head. 
Larger ports mean you can get more air into the cylinders at the same pressure (psi).
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Dan G.
'99 Spruce Green 3.0L ADC T3/4 Turbo Cougar- SOLD.
2006 Pontiac GTO - CGM, M6, 18s - !CAGS, JHP Binnacle Gauges
1998 Contour SE V6 ATX <--- Beater
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