FPR Vacuum?

[Nixon1]

This is a question I'm curious about with a friend of mine... He's got, I think it's an 88, GT with a 5 speed...performance clutch, shift kit, short-throw, Moroso Cold Air Intake Arm & Filter, Hooker Super Comp headers, H pipe, Flowmasters, and he SAYS it's got a cam in it.. But besides all this..the car is TRASH... The motor is filthy and it's a big time hackjob...although we thought he did a nice clutch dump in front of us on videotape until we replayed the tape slow-mo and noticed that a vast majority of the cloud of white smoke we were engulfed by came from his turndowns, NOT his tires.

To the question though..HOW necessary is vacuum to a stock fuel pressure regulator? Among the things hacked together on his car, his FPR has no vacuum line going to it whatsoever. The line is cut open about 1 in. past the regulator and leads to nowhere. Car still runs very hard...just the motor sounds like crap. He's been wanting to race me at the track for some time now and I'm just trying to get an idea of HOW screwed up his car is, to know if I can still beat him even though he's got more modifications. I hate losing money. Thanks all.