[Coupe50h]

Well we had a discussion on this, sort of, in another thread, jeff chambers I believe said "if the maf is calibrated to the injector, run 40 psi vac off" (but who would run a maf that wasnt calibrated?)

Well like many of other stangers have done, I went to the track to test this out, I did find out my car ran it's best time at 39 psi, weather was humid as he11, I only let my car cool off about 10 minutes between each run no ice.
I ran 3 times:
1st pass: fuel 40 psi, I bogged it not expecting the track to hook like it did, made a 12.96 106.33 the 60 ft was sad, but i was looking at mph.

2nd pass: I thought id raise the fuel up to 42 psi, I ran a 12.80 at 105.?? I was dissapointed since i usually go 107+

3rd pass: i went down to 39 psi, 60 ft'd in the mid 1.7 and went 12.75 @ 106.71 (damn humidity kept my mph down, but i was happier with that.

my conclusion, I think i could have went faster with a little less fuel, but jeff was right, I found anything over 40 psi hurt me, it actually made my car hesitate on the topend, think i was detonating on the 2nd run.

Take it easy.