Going to track, tire question

[mitsuclipsegsx]

I am going to the track with my 97 GSt with these mods:

LSD
Pte 50 trim- non BB
fp2 cams
680cc injectors
adfx front mount
turbotrix 95 ported manifold with 38mm tial
ported evo 3 02 housing
megan 3" down pipe with qtp cut out with digi auto switch
255 walbro h/p fuel pump
NO AFPR(says u dont need on a 2g)

My questions are, what tire pressure should i put in? 20 on front, how about back?
What should i set my shutterbox at, its at 4k now?
And should i use the antilag, probably not cause i have fwd

 

[daren_p]

I haven't seen alot of track time but here's my input. First off what size tires are you running? 20psi is probably a good starting point, you may be able to air down abit more depending on wall size. For rear tires you usually want to run a fairly high psi as you are just dragging these wheels & more pressure will help prevent rear squat/weight transfer. Antilag I would say not to use, you'll probably just go up in smoke if you do. For your launch rpm, I'd probably start off abit lower & work your way up depending on how the traction is at the track. I've run 3250 before when the track wasn't hooking well, I'd go from there & see what works best for you.

As for the 255 pump & the 2g FPR, Im going to say there's a very good chance your stock fpr is being overrun. I know of people who thought they were fine with this setup till they actually tested fuel pressure to find it was over run. I'd put an FPR on your list of next items to pick up.