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Headers need help!!!!!!!!!!!!!!!!!!!

807 Views 6 Replies 3 Participants Last post by  mhardy
what is better for an si 99, 4-2-1 or 4-1. Can someone help me?
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didnt we all go through this on your other post?
shit i got like 2 usefull replies....big deal
depends were you need power... lower rpm or higher rpm?
I need good overall gain. I use my car for daily driving. I heard the 4-2-1 gives good low end gains. But would the 4-1 at least give some low end gain?
Bosstone700 said:
But would the 4-1 at least give some low end gain?
Yeah. Some.
sorry im not flamin' don't mean to come off like a dick.
anyway you're going to get gains on both ends from either more high end from 4-1 more low end from 4-2-1
if you do alot of freeway driving or high rpm driving go w/ 4-1
if you do alot of stop and go get 4-2-1 :D
or go turbo and fork out the extra dough!
and get alot of gains around the board
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