Michaelknight
Newbie
BTW my truck has a built 383 with carb and 4l60e if that makes a difference
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
My truck is a 97. I went from 342s to 373s. So I put that info in and then my tires are 275/60/15, so I also put the height of the tire in, and then I did a Denali cluster with a 120 MPH speedometer swap so I adjusted the tire size to make it read the rite speed. Yes the Jet programmer I have will do all of this and more. Performance tune with 3 settings, transmission shift points and firmness, and you can set top speed limiter and RPM limiter. It also will clear CEL and does a live data sensor read. It is not a huge difference in engine performance but is noticeable. A big difference in tarns shift firmness. The trans shifts much quicker, but not to the point of real hard shifts. A live tune is always most effective, then a mail in tune, then a flash tune programmer. I am happy with my programmer. It is nice to be able to make adjustments any time I want to.And it worked for the 97 pcm? I just input my tires and ratio?