New cat = WOW!!!
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Joined: Jun 2004
Posts: 647
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From: South Jersey
Car: 1991 RS Convertible
Engine: 96 LT1
Transmission: T5
Axle/Gears: 3.45 9-Bolt
New cat = WOW!!!
Hey guys,
I put a nw magnaflow 3" high-flow cat on my car yesterday. All I can say is WOW. You dont realize how restrictive that stock cat is till you get the new one on there. The car pulls much stronger now... And the sound.... OH MY ***. Its louder and deeper than it has ever been & I think it sounds better than any of the other cars in my area!!! IM VERY HAPPY!!
Too bad it didnt help my emissions
I am still failing.
I put a nw magnaflow 3" high-flow cat on my car yesterday. All I can say is WOW. You dont realize how restrictive that stock cat is till you get the new one on there. The car pulls much stronger now... And the sound.... OH MY ***. Its louder and deeper than it has ever been & I think it sounds better than any of the other cars in my area!!! IM VERY HAPPY!!
Too bad it didnt help my emissions

I am still failing.
Is there a chance you have some problem in the engine that's causing the cat to plug up? It seems surprising that a new cat didn't clean up the emissions. Check for some other problem in that engine.
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