[II kings 9:20]

Great work, thanks for posting some numbers, as I predicted in another post the torque gains are huge when headers added.

Looks like it is pointless to rev past 5,000 rpm unless we had a manual shift, auto sticks are not great for staying "on the cam".

I had a 90 Lexus and the check engine light stayed on when I replaced the instrument cluster, I put a piece of black tape over the projection from the underside of the binnacle and voila! Maybe a small square of black tape on the inst. panel will help .