engine ping in acceleration
Hello, I have Corvette 2008 C6, 60,000 Km., 91 octane, since 2-3 weeks my engine ping in the acceleration(time :1 sec. average) I tried with 94 octane + boost octane Lucas, my engine ping again. I have check my spark plugs, the air flow sensor, the air filter, It's good. What should I do ?