4" exhaust - TDR Roundtable

4" exhaust

04-12-2005, 01:06 AM

#1 (permalink)

Lightfoot

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Join Date: Mar 2005 Posts: 28

4" exhaust

I just had a 4" exhaust and 2100 cfm. muffler installed on my '96 to help cool down the turbo when pulling in the mountains. The shop, Stan's Headers, which does nothing but performance diesel and gas exhaust systems claims that this system, with the catalytic converter intact gives a 20 hp boost, more boost without the catalytic converter (which by law they can't do). I have been told by a friend that there is no hp boost with the 4" installation, just the cooling advantage for the turbo e.g.t.. Anyone know about a hp increase with the 4" pipe? Im new on TDR and this may be old stuff but I would appreciate any input.

96 2500 4x4pacbrake353gearsAT4" highflo mufffler

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