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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 02-22-2009, 08:56 PM   #31
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Default Catalytic converter replacement with muffler?

Should I replace my catalytic converter since I have to replace the muffler anyways? My muffler was completely knocked off from a nasty parking barrier that snuck up behind me so I need to put on a new one and I was thinking of a cool sounding one like thrush dual output or something like this. If I have to get the work done by a mechanic js it a good idea to replace the catalytic converter at the same time and will it increase horsepower at all?
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Old 02-22-2009, 09:08 PM   #32
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Depends on how old your cat is. Your not going to really add HP with a new cat, but you will get back what has been lost over time.
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Old 02-22-2009, 10:35 PM   #33
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sorry about my lack of forward info. I own a 99 sse that is all stock except for one front right rim that is now from a grand-am. I have the interlaced bronze on aluminum original rims but one got busted from a nasty curb that happened to be hungry for aluminum one night. I looked but couldn't find a replacement so i went with a rim that fit.
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