Engine Light Problems After Replacing Cat
06-18-2010, 10:05 PM
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Engine Light Problems After Replacing Cat Hello. New to the board. I own a 2008 Grand Prix GXP. I just replaced my exhaust system with a magnaflow catback system. I also replaced the cat with a high-flow cat. My engine light is turning on and I can no longer use my remote start feature. Should I put the stock cat back on? I Know these next comments sound crazy but it happened so here goes nothing. The other day I was parked off to the side of the road while on a phone call and abruptly It sounded and felt like someone hit my car. It jolted like it was hit. Any clue? Any help would be much appreciated. Thanks.
06-18-2010, 11:01 PM
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Hello. New to the board. I own a 2008 Grand Prix GXP. I just replaced my exhaust system with a magnaflow catback system. I also replaced the cat with a high-flow cat. My engine light is turning on and I can no longer use my remote start feature. Should I put the stock cat back on? I Know these next comments sound crazy but it happened so here goes nothing. The other day I was parked off to the side of the road while on a phone call and abruptly It sounded and felt like someone hit my car. It jolted like it was hit. Any clue? Any help would be much appreciated. Thanks.
Last edited by monte_with_a_LS4; 06-18-2010 at 11:13 PM.
06-18-2010, 11:31 PM
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I have the high flow cat with a 3 inch down pipe and I do not get a light because I have done the O2 sensor mod
http://www.energeticforum.com/renewa...n-foulers.html
http://www.energeticforum.com/renewa...n-foulers.html
you got a PM that i replied to you message. 
06-19-2010, 01:50 PM
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just get it tuned out. i ditched the cat and have had the light on for awhile now since i havn't been able to get to my tunner and my A/F ratio is still in check so i wouldn't worry.
