New to this site
#1
New to this site
hey guy I’m new to this site I have an 06 gmc Sierra
It has a 5.3 I want to put headers and some high flow cats on but the told me that it will throw a code just want to know if I dose throw the code how to fix it and if it will throw a code
#3
thanks bro I really want to do some more mods but just don’t know to much I just got into trucks not to long ago
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