2005 Tahoe LM7 turbo spark tuning

[Duneriders13]

hey guys, I have a 2005 Tahoe with an LM7. Full turbo build, cam valvetrain etc. 4l80e swap, 14 bolt rear end yada yada. I am using hp tuners to tune it with and I am running into an issue. I am having timing being pulled out while I am underboost. so much so that its falling on its face. Wideband readings are good, 11.5 to 12.3. On 93 pump gas. IN the scanner I have everything that plays with timing being monitored. I see there is a few degrees for IAT being pulled out and coolant temp, but unsure what is pulling the rest out. This is my first vehicle im tuning with hp tuners so bear with me. I Also pulled out some torque management and this is drive by wire. Thanks in advance!

Build:
LM7
Baker engineering Torq R grind cam
BTR valvetrain
ARP head bolts
Shimmed oil pump
T76 turbo
Personally built kit
Full 3' exhaust
4l80e trans with HD2 kit and upgraded clutches
Circle D 3200 stall converter
Hummer H2 14 bolt with e-loc

[5FDP]

Could be burst knock as you set that the opposite way or what you want. Zero means it's always active and 8 means it's basically disabled.

[Duneriders13]

Could be burst knock as you set that the opposite way or what you want. Zero means it's always active and 8 means it's basically disabled.

AHH I see. Wouldn't that show up as knock retard in the vcm scanner? thanks