99yellowz28

I have a set of hooker headers, hooker Y pipe, ls6 intake, slp air box, borla exhaust with a MagnaFlow converter and a tsp torquer v3 cam and the exhaust smells real bad even sitting at a stop light it just stinks. Does anybody else have this problemiI wasn't sure if it's normal because it didn't do it until I put the headers on and tune

HCI2000SS

iTrader: (2)

No cats and a cam...yes that's pretty normal lol

Exidous

iTrader: (11)

Cats will kill 75% of the smell. The rest is tune/overlap.

I had no cats and 0* overlap. Still had bad smell. Totally normal. I'll be at -3* overlap and adding cats back in next winter.