I will see what cam card says when he gets motor home, didn’t get home from work in time to pick it up.
Shop said it would probably make more power if spun harder but they didn’t go over 6500 and it hadn’t peaked yet.

I'll through this out there...ditch the salvage yard harness. SpearTech builds nice harnesses and calibrated ECMs for not much money. The harness...the delete all the crap you wont want and are some of the nicer ones out there as far as fit and finish.

https://www.speartech.com/