4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

exhaust back pressure

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Old 05-29-2009, 07:09 PM
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greenmachine1
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Default exhaust back pressure

I got borla stingers cat back and I was wondering about the back pressure difference it would make.
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Old 05-29-2009, 07:21 PM
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stang04chris
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Probably won't be noticable
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Old 05-29-2009, 07:27 PM
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2000AZ5.0GT
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Originally Posted by stang04chris
Probably won't be noticable

not even enough to make 1/10th of 1hp difference.
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Old 05-29-2009, 07:32 PM
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greenmachine1
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Thanx
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Old 05-30-2009, 05:59 AM
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cliffyk
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If anything it will reduce the backpressure, which is always a good thing...
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Old 05-30-2009, 09:45 AM
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boduke0220
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when i switched from SLP to Flowmaster it seemed like i gained some on the low end and lost some on the high end, Dont trust butt dynos though
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