Unless you're moving a lot of air through the motor(monster cam with aftermarket intake/heads and spinning to 7k+, or a good sized shot of nitrous) the 1-3/4" should take care of your needs. And you don't want any back pressure, you want velocity. Don't confuse the two.
Last edited by Duct_tape123; 05-23-2012 at 02:30 PM.
cjriojas:if you're weather man is a 5 gallon bucket, YOUUUUUUUUUUU might be a redneck
danger_ranger83: I see now why it cost so much to get a harness made... FML
2boostedSilverado: I like Casey's rear end, I want to chat with him about it
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