Ok, my friend has a new 2008 gmc sierra 5.3. He wants to know what the best tuner is for it. He nows I have a tuner for my 7.3 so he asked me if I would investigate. So I know this is DEFINETLY not a gm forum but does anyone on here have any suggestions on what tuner gets the 5.3 gasser the most power? I looked on some gm forums but im embarrassed to get a user name and ask. LOL

 

Anything he gets is only going to add 15-25hp. Gassers don't benefit from tuners like diesels do.

But no, I don't know what the best would be for his truck. Probably Superchips or something like that.

 

Maybe a Grantinelli tuner. There are alot of them out there but I doubt any would be as good as a DP.

 

lol Well Bully Dog makes the power pup for it. Superchip makes the Cortex and the Flashpac. Hypertech, possibly Edge, and Quadzilla but my dealer books are in my breifcase in my truck. Ill let you know tomarrow the horsepower numbers.

 

Yeah, he knows he is only gonna gain a little. But every little bit helps. He wants the tuner that puts out the most hp. But anyways.....

 

Ill PM you tomarrow with some details

 

I suggest he go on the Chebby site and ask for himself! The best gains he could get is if he had his truck on a flatbed trailer and was being towed by a Powerstroke lol

 

Now thats harsh travis, LOL, but true. I got to give you alot of apples to ask that on here. I don't know alot about gasser chips but your friend got to go to a cheby forum to get real input on what works for them. Or somebody will chime in that has a cheby in the back of their driveway,lol.

 

Here are some links for him
Bully Dog Site | Bully Dog Product
Superchips / Superchips Product Reference / www.superchips.com
Diablo Sport 2004-2005 GM Vehicles Predator
Hypertech, Inc.
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