Quote:
Originally Posted by KennyPowers
the much lower IAT and resistence to heat soak gained from a 5 inch FMIC massively outweighs whatever possible negatives gained from an addiitonal 10-20lbs over the stock FMIC.
i still firmly believe there is no way you can notice any negative effects from 10-20 lbs added on the street driving like that.
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On most autocross courses I think a FMIC is likely to slow you down. Slightly more lag due to the larger volume of air to compress after the turbos (it's there, even if you don't feel it), more weight on the nose increases both understeer on turn-in and oversteer on exit, and reduces acceleration whever you're traction limited (which is a lot at the autocross). You're also probably not on the throttle (or on course) long enough for heat-soak to be an issue, and the extra weight will hurt cornering, braking, transitions, etc everywhere, which is where time is made. Could the extra power overcome this? On most courses I don't think so.
So whether the intercooler benefits "massively outweigh" the negatives depends on usage. Drag racing, sure. In a number of other cases I don't agree, however.