Not this platform but...

[p71]

I have an 07 avalanche and want to get it a little quicker and more powerful... i got a canned tuner. I hate how it makes the truck shift. So the question is anyone got any suggestions for the L76's baby brother bolt on wise or tuning wise?

Tango.

[GRRRR8]

Volant CAI and a MagnaFlow cat back work wonders with the proper tune.

[Tate]

Contact Nelson Performance here in San Antonio, TX. They are Gods in the GM truck world and I know he has/had a Avalanche that was running something like low 12's high 11's. I'm sure he could take care of you. They did the dyno tune on my wife's Pontiac Grand Prix GXP with the 5.3l in it and did an amazing job and is one hell of a guy to work with.
HTH,
Tate