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Old 08-14-2013, 09:32 PM   #1
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New exhaust power loss

Hey everyone, first post here, hoping for some help. I have a 1996 Saleen with some modifications but the one Im questioning is the exhaust. When i bought the car it had a pair of hedman long tubes with 3" collectors and an off-road x pipe (Not sure on the brand, sorry). But i recent replaced all that with kooks long tubes and an on road x pipe with high flow cats (to pass NJ inspection and to get the exhaust to not hang so low...it still does) and 3" as well. Sound is great but i seem to have lost a lot of low end torque after the swap, not sure if its from different manufacturers or cats but its kind of irritating. Does anyone have any idea? thanks a lot!
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Old 08-14-2013, 10:46 PM   #2
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Is it 3" all the way back? Or just 3" collectors?
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Old 08-14-2013, 10:47 PM   #3
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i'm curious on tubing size as well...but yes the cats could impact your low end power band
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Old 08-14-2013, 11:18 PM   #4
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The 3" is ur problem. That's to big for not being f/i
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Old 08-15-2013, 08:38 AM   #5
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3" all the way through the cats, then a 2 1/2" cat back
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Old 08-15-2013, 09:23 AM   #6
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Quote:
Originally Posted by 96saleen
3" all the way through the cats, then a 2 1/2" cat back
Oh nevermind lol
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Old 08-15-2013, 10:01 AM   #7
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Quote:
Originally Posted by 96saleen View Post
3" all the way through the cats, then a 2 1/2" cat back
Yeah the 3" midpipe is your issue. You lost a lot of low end exhaust velocity
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Old 08-15-2013, 10:06 AM   #8
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In this case bigger isn't better lol.
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Old 08-15-2013, 10:33 AM   #9
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I figured it was the issue, oh well, got through inspection so I'll just swap it back out at some point. Thanks guys
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