2005 Chevy Silverado V8 Two Wheel Drive Automatic 50,000 miles
when I accelerate I can more pings in my motor. I have tried octane boost. Did not work. The motor should be running off 97 octane. They only sell 92 in Oregon with 10% ethanol. It is a factory Corvette LS1 block with vortech heads. It has a hyertech power programmer 3, throttle body spacer, K& N cold air intake. All of this came from the dealership in Arizona installed. I have moved to oregon and now my truck is running bad.