fp questions, track times

[94gtslow]

well i got back from the track and here is what I ran

2.24 60 ft
9.08 1/8 et
80.27 1/8 mph
13.89 1/4 et
101.35 1/4 mph


anyway it was very hot and humid everyone was sweating it had rained ealier in the day

and the time in my sig it was about 60 degress

anyways the question is about my timing and fuel pressure. I bumped my timing to 14 degress and drop my fp to 38 vacum off and about 32 vacum on. i have big 30# injectors.

I just dont get how i lost 5 mph in the 1/4 mile, could the it be the weather? or is my fp too low, its doenst detonote in running 93 octane gas. IT was my first time back to the track and I only got this onw run in.

Opions greatly apprciated.

 

[Joes95GT]

When you take back so much fuel pressure, you are affecting the atomization/spray pattern of the injectors. It's always recommended that you run the stock injectors at 38 PSI (the same as stock). The fuel could have possibly been dribbling out of the injectors rather than spraying?

Joe