GMT900 slow throttle blade

[RCSBcolo]

ok so I have a 2008 GMC Sierra RCSB 4.8L

I have done quite a bit of tuning trying to get the throttle to open faster. I've searched and done everything I have read that is supposed to help. And nothing seems to work. I have it going to PE immediately upon stepping on it, PE enrichment rate is 1.0, I've added quite a bit of timing in the 0-3000 rpm range. I've also taken out all the engine torque management.

what's the trick? my truck is trapping nearly 91 mph which is great for just having the tune, but my 60 fts are miserable 2.3+ because it is so slow off the line. I have 3.73's and a locker even.

[BBA]

Part of the trick is to get rid of all negative values in all timing tables and then all but eliminate burst knock retard.

[Dex]

http://www.hptuners.com/forum/showthread.php?t=21714
check out this thread

[RCSBcolo]

http://www.hptuners.com/forum/showthread.php?t=21714
check out this thread

already got the BETA and checked that table and it's maxed out. Everything I have tried has really not helped at all. 2.33 60 ft