The truck is a 2008 Silverado that was originally a 5.3/4l60 truck. Currently it has been swapped to a 6.2/6L80
VVT and AFM have been DELETED and I beleive i have cancelled it all out in the tune.
the truck starts up great with the 3 bolt, larger cam and the part throttle drivability is great.
When giving 70% of pedal or more the truck starts to hesitate and you can see MAF on the chart start to oscillate...
you can see in the picture below that spark advance spikes to commanded then drops to about 0* of timing and it wont allow the vehicle to downshift...
Ive tried to disable anything in torque managment that controls spark.
The beast hesitation.PNG
Notice CylAir also seems like a large number for what a cammed 6.2 should see...
attached below is log and tune
WES6.2swapWORKING.hpt
the beast timing issue.hpl
Thanks!