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blageo23 · 07-17-2007

Im not an expert but this is what I think...
When it comes out of your turbo its all compacted in the 2.75" space, then it hits your 3" and that same amount of air that was in the 2.75" space gets more room in the 3" space and can move faster. Now if you can increase that to 3.5" then thats even more space for more air to come out. I dont know if that makes sense to you but it did in my head.

07-17-2007	#19
blageo23 AWD4G64 Join Date: Jun 2004 Location: Shoreview, MN Posts: 2,286	Re: Exhaust Opinions Im not an expert but this is what I think... When it comes out of your turbo its all compacted in the 2.75" space, then it hits your 3" and that same amount of air that was in the 2.75" space gets more room in the 3" space and can move faster. Now if you can increase that to 3.5" then thats even more space for more air to come out. I dont know if that makes sense to you but it did in my head.