Anyone Used PPIII or Jet?

[tblazer503]

Are they worth it? Which is better? Hypertech, or Jet, or even SuperChip?? Anyone?? Thanks

[MarkD]

I am using my 3rd HPP III (third vehicle).  I have been pleased with its performance.

[CMNTMXR81]

I had a Jet plug in power module on my '97 Tahoe.  It firmed up shift points was about all I could tell by my Butt-o-meter.

 

Before I did the engine on the Z, I had an HPPIII, but I didn't use it for the power programming.  I used it for the gear, tire, temp/fan and other miscellaneous setting options.