KG13GT500 Posted November 7, 2019 Report Share Posted November 7, 2019 Recently purchase a13 Gt 500 I want to put long tube headers and x pipe with high flow cats .what brand is good. Quote Link to comment Share on other sites More sharing options...
andrewnagle1964 Posted November 7, 2019 Report Share Posted November 7, 2019 American Racing Quote Link to comment Share on other sites More sharing options...
KG13GT500 Posted November 7, 2019 Author Report Share Posted November 7, 2019 Ok thanks I will check them out Quote Link to comment Share on other sites More sharing options...
1 Alibi 2 Posted November 10, 2019 Report Share Posted November 10, 2019 I've had good luck with Kooks on 2 GT500's. What I found with their " high flow cats " on my 11, was the car threw codes. Not sure where you live, but the fix was Kooks " green " cats. I'm able to pass N.J. inspection on both cars. I run stock mufflers on both. I have no experience with ARH, other than they make a good product. Quote Link to comment Share on other sites More sharing options...
KG13GT500 Posted November 10, 2019 Author Report Share Posted November 10, 2019 Looks nice,I am leaning towards kooks thanks.Hey I lowered my car with H&R springs and seams as the front shocks are bottoming out unless I put them in sport mode,I want to change them but I still want the setting button to work.Do you have any recommendations,thanks. Quote Link to comment Share on other sites More sharing options...
1 Alibi 2 Posted November 11, 2019 Report Share Posted November 11, 2019 Can't help you there, didn't lower either car.. Quote Link to comment Share on other sites More sharing options...
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