Reviewed By Dillin P (Lexington, SC) Reviewed for a 2004 Chevy C/K 1500 —5/9/2012 11:12 AM
I was extremely impressed by the differance this tuner made on the drivability and overall power of my 2004 Chevy Silverado Z71 5.3 with 120,xxx. I had already installed a k&n cold air intake, flowmaster exhaust, and a poweraid throttle body spacer and was averaging 13 mpg city and 18 mpg on the highway but with the diablo sport tuner installed on the 91 octane tune im now averaging 17 in the city and 23 on the highway! Its rediculous to say the least. I recomend this product to every one I know. With gains like this why wouldnt you have one???