NVR4GET

iTrader: (3)

I dont want a tune because my car needs to keep the stock pcm, I want to know the best programer for my 04 gmc z71 5.3.?
thanks,
Matt

Sport Truck

Get a Predator, the '04 is very strong!! prolly the most powerful one they have made yet.

therock

iTrader: (2)

Nelson Tune. nelsonperformance.com .

one03sierra

iTrader: (1)

i would go nelson also. there have been way to many problems with the predator i short term and long term usage. why do you want to keep the stock pcm? if it is a warranty issue then dont worry they cant tell.

Snake Eater

buy your own HPtuner. Its got it all, and isnt much more money.

QuietTahoe

I just got the new Crane Powermax Tuner from Vinci High Performance in Orlando. Worked great stock, works even better with my new cam. Has tuning for 4 families of LS1 truck oriented cams plus tuning for superchargers, high flow injectors, headers and cat backs and all the standard stuff that the others have. Check it out and its instructions on Crane's website: www.cranecams.com.

FILE

iTrader: (5)

If you can tune it yourself, get an HP tuner. You can't beat it since you get a scanner along with the editor for about $500.