Is a stock Grand Cherokee SRT8 just not powerful enough? Apparently not as evidenced by this mint example brought to us, which now has Kooks headers as well as a Diablosport Predator tuner installed. The headers allow the engine to breathe deeper creating more power as well as an authoritative exhaust note. The tuner adjusts the engine parameters to accept the change in exhaust flow without issue while improving overall response and driveability.