Hear a lot of tuner upgrades for the I5 but no so much for the 5.3. If needed, are there any that someone could recommend?

 

If you have an 08 or 09 Alpha I would suggest the Superchips Flashpaq. I used one on 3 different Alphas and it was a great unit. If you have a 10 Alpha, well then you have to have your current PCM tuned by a tuner company.

 

Thanks Tainter for the response. Mine is an 08 so it's off to Superchips and do some research.