Power Programer is the best im getting it soon after i get my exhaust,new pulley and intake but that would be last thing for my truck.Im going for mostly looks but my SUV JIMmy just dont cut it when i floor it so ima get the power programer (its proven to work and have plenty of options).

 

yeah its def worth the purchase

 

I put the Power Programmer performance programming on mine and it will smooth pass somebody quick now. It accelerates ALOT better. Although there isn't that big a difference from a dead stop. I thought that stock the 4.3 was a little sluggish.

The best part is the 100mph limiter is now gone!

I got it for $200 on eBay. Worked GREAT!