well i have the stock svt exhaust with a sho shop y pipe...test pipe,and gutted cats and mines raspy above 3800 rpms,cold or hot.....

"Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but STUPID lasts forever."-Aristophanes. --93 pgt,headers,intake,borla=14.9 1/4mile