Check this place out http://www.alkycontrol.com/ then call and speak with Julio.
i have seen a 30PSI (spike) and held 27 PSI the full 1/4 on 93 Octane and M1 on my car. Plus this guy will hold your hand and walk you through the whole set up.


AKA-Turbopowered68
1968 Chevelle Turbo 3.8
11.74 @ 114
1987 Regal Turbo 3.8