After some more tuning, this is the chart of my last run and what all my electronic settings were kept at. We finally got it to flatten out semi like a plateau as compared to the other runs. The fall off at 5500 RPM isnt too bad considering these babys spool quick! Compare a Supra with GReddy T88 Turbos, they dont spool till 5500 RPM. Larger turbos would bring larger HP numbers, but Im happy with Sport 500s as all Im looking for is 500HP and not a 1000HP T88 Supra. Maybe someday Ill build and buy a supra and make 1000HP. But for now having 500HP on the streets is good enough for me. But here's the chart of my last run.