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Keep the Cats, the ones that come with the American Racing are very high quality high flo cats. You will not lose much power by keeping them plus you get some nasty odors creeping into the car if you delete them.
if i dont track the car...should i keep the cats? the wife and i still use it to travel a little,will the headers make it alot louder?
Keep the cats, you will actually have to add high flow cats with the headers and it will be louder but not much with stock mufflers, it will be a nice sound.
I know I'm gonna hear about this one but here goes. I say OBX. Had mine on over a year on my ls3 no problems fit perfect made 30 rwhp too and sound great! All for the low price of $699
