401 Twin turbo dyno

Getting a baseline before I really start tuning. First pull was on 12.5 psi, 640whp on mustang dyno. Second pull was on a 18.5psi run with crap air fuel ratio, only 674whp. Last pull was with leaner tune with abit less boost, 17.5psi. Made 690whp corrected on mustang dyno. Running about 10.0 to 1 air fuel, maybe in the 9's air fuel. Dyno doesnt load motor like the street/track so it showed richer here. Car has gone 9.8's at 140mph on 14psi. All pump gas 93 octane only. ...


















