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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.
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