Here's what I've got. 2010 Camaro SS 6 speed manual with a 419ci LS3 with twin turbo's generating a peak of 12psi boost. I recently upgraded to the HPT custom 3-bar OS and am in the process of tuning it. I've completed the idle and normal driving areas of the tune and began working on the boosted areas.
The problem is that it backfires and hesitates bad when under loaded boost conditions. For example, if I take the RPM's down to 2500 in 4th gear and go to WOT the boost will reach 6-7psi at 3500-4000 and the engine begins to hesitate and backfire pretty violently.
Looking at the log I've created, nothing is indicative of cause, timing isn't pulled and fuel delivery seems to be fine. The MAF log looks a little choppy, but it's always been that way.
To rule out ignition issues, yesterday I swapped the coil packs and wires, and regapped the spark plugs to 0.030.
Any ideas on how to diagnose this would be much appreciated!! Are there some PID's I can log that will help?