I'm looking to buy a programmer for my 06 Silverado Z71 with 5.3 V8. I want to more HP but also better fuel economy. I want feedback on the programmers that you have. Thanks

 

I get the Diablo on Wednesday. I will let you know how that turns out.

 

I have the diablo predator I swear by it. The superchips flashpaq looks good too.

 

I was also thinking of getting some sort of programer as Im going to be installing pacesetter LT headers (probable pacesetters) on my 2000 5.3 silverado in the spring. Will any of the handhelds be good enough to tune the truck for the install of LT headers?

Thanks Dave

 

Just installed the perfomance tune. I will post back after my test run!!

 

I have very good throttle response. I had to quicken the shift timing and trans fluid pressure all the way to get the shift the way I want. Overall this thing is great!! I need to adjust some of the other parameters to maximize the perfomance tune. I am very happy with this tuner.