If I was to install Kooks headers when I do my red Magnuson supercharger, could I use the factory cats? Less headache since I don't have to take out the O2 sensors and its cheaper since I'm only buying the headers. Doesn't SLP use the factory cats on their camaro's
. BUT.....can I do just the (Kooks) headers since the factory exhaust system is only a 2.5" pipe? I have the NPP with the exhaust commander (or whatever the official name is) that opens the baffle on the outer exhaust tip. How much more HP would I gain with Kooks headers and factory cats over and above a supercharger install? (custom tuning by Ted
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