My 6.0L, PRC 243 heads, Texas Speed 224R 112 LSA cammed, Kooks LT headers with cats, engine has about 500 or so miles, since it was put together and tuned. A fair bit of the time, the exhaust almost smells like a lawn mower.
Should this be normal, or is something off?
I did just replace the IAC about 150 miles ago, was running rough, runs a bit better but still has smell.
