Had a Diablo intune before and I could adjust the "injector slope" I am not sure how to make a similar adjustment with HP Tuners.
My data log was showing a +18 on my ltft.
background info. Swapped a 6.2 L9H into a Tahoe that originally had a 5.3 LMG. Currently using a basically stock Tune for a 6.2 with VVT disabled. Have a mild non-VVT cam (212 / 220 .501 lift)
Thanks,