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Re: exhaust back pressure
Quote:
Originally posted by octave236
there have been a couple of thing listed aout this but i would like to know inorder to clarify somethings ... what would be the best exhaust back pressure psi in a ga16de and a sr20de n/a of course. and could you prementaly have a gauge set up inside the car to let you know whats up. im putting new exhaust pipe in and i dont want to get to loose and mess something up or even loose hp. i have a ga16de with hs 4-2-1 headers. and a 2.5' strait thru sport muffler on my b13. could any one help .. i just wanted to know the sr's for future ref.
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In testing I found that any backpressure more than 2 psi starts to degade pwer in engines with boltons including camshafts.
You want to run the smallest diameter tubing to accomplish this to keep the velocity up which is 2.25 mandrel bent in a bolt on NA motor with straight through peforated core mufflers.
Mike
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