Just wondering if y'all have developed a tuning upgrade yet for the 2008 6.2 6L80E powertrain? Is the VVT or 6-speed auto with this combo an issue?

As you are aware, the 6.2 is already 91+ octane "recommended", and I don't mind feeding it 93 octane.

Definitely want to get rid of the top speed limiter. I'll be towing one of my Pontiacs (6000# +) from time to time, and would of course "enjoy" more torque and power all the time.

If you have tuned a 6.2, please post back the HP & TQ improvements if you don't mind.

I'd have called or e-mailed, but since I couldn't find any info on the forums I figured I'd post here so everyone can benefit.

Many thanks in advance!