Danistheman1234

I just recently bought a hypertech max energy tuner for my 2002 Chevy Silverado 1500 5.3L 4wd Z71 and was wondering what settings i should put everything on, Rev Limiter, Shift Points, Shift firmness, and the gear ratio? I dont want to screw my engine up and ruin my transmission. Please help!

country_09

did you buy it for performance? mpg's?...honestly I'd send it back or sell it. it will do nothin for you in either one of these departments...I know I used to have one of them, sold it, and got a custom tune by wheatley and now I wonder why I never did that in the first place rather than buy a programmer

Danistheman1234

actually when i installed it I put 5900 rpms, my tire rating speed, shift firmness to 25%, regular octane, rear axle gear ratio to 4.10:1, and everything else set to stock, I got an incredible performance increase. Way better acceleration, and i can actually feel the horsepower gain and response. I also added it with a K&N FIPK Air Intake and a throttle body space. My truck performs even better!

country_09

throttle body spacer isn't helpin at all and the intake is probably where most of the power comes from..when i put mine on i thought hell yeah i've got way more power, then raced a friends truck who had the exact same truck as me just white and we were neck and neck the whole way, after 4 runs it was the same way. Now? he can't hang with me past 35 and i still have to get it retuned after electric fans are installed

Hypertech

Danistheman1234 The settings you selected are good, I would put the shift firmness to 25% 1st to 2nd and 75% for the rest. The rpm range you selected is right. You should see around 1 to 2 mpg increase