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rst95eclipse · 03-01-2006

Okay, I've done some research, and I'm sure that it can be debated until nights end. I don't want people giving their opinions or what they've heard. I just want proof. Proof as in dyno charts/numbers or the word from someone who has done this.

I want to know if you have a pretty sizeable setup that's pushing 500+whp that a 4" downpipe with a 3" testpipe/catback would yield a gain of more power than just a full 3" exhaust.

I'm asking this because I'm questioning if the bottleneck created downstream from the turbo would cause a loss in power. Or if the extra 4 feet of larger diameter piping allowed the turbo to spool faster. Something.

03-01-2006	#1
rst95eclipse Alias 3 Champion! Ass Hunter Champion! Basil Brush Gobbler Champion! Basketball Shoot-out Champion! Battle Snake Champion! Blasterman Champion! Bloody Rage Champion! Brave The Bar Champion! Bubble Bobble Champion! Bubble Bobble The Rival Champion! Car Park Chaos Champion! DTunnel Champion! Hexxagon Champion! Mario Kart Extreme! Champion! PacMan Jungle Adventure Champion! Pacmania 3 Champion! Q*Bert 2004 Champion! Tournaments Won: 7 Join Date: Feb 2006 Location: Minneapols/Rochester, MN Posts: 734	Proof of larger DP/ Fluid Dynamics Okay, I've done some research, and I'm sure that it can be debated until nights end. I don't want people giving their opinions or what they've heard. I just want proof. Proof as in dyno charts/numbers or the word from someone who has done this. I want to know if you have a pretty sizeable setup that's pushing 500+whp that a 4" downpipe with a 3" testpipe/catback would yield a gain of more power than just a full 3" exhaust. I'm asking this because I'm questioning if the bottleneck created downstream from the turbo would cause a loss in power. Or if the extra 4 feet of larger diameter piping allowed the turbo to spool faster. Something.