I own a 02' Z28 Camaro. I recently programmed my car with the Hypertech Programmer III. Although I have noticed significant increases in performance, there is an audible pinging in the engine compartment when I hit high rpm's. Anyone else experience this?

Add On's: Granatelli 80mm Oxygen Sensor
Granatelli Cold Air Lid, K&N Filter, SLP Ram Air Kit, Borla Exhaust System.

Any more suggestions for premium performance?