Mitsubish Lancer Evolution Forum - EvoTuners.net

bogey8 · 10-20-2005, 12:05 PM

21-22 psi should be the max boost on 91. On the dyno with 101 octane, we've pushed my car to 28 psi and was making lots of power. But I wouldn't recommend going past 25 psi without at least replacing head studs.

OMASERONE · 10-26-2005, 10:08 AM

yea for me in nevada we get 91 oct . I will only spike at 21-22 psi and taper down to 19- 19.5 at redline. And thats at WOT in 4th and 5th gear some say to let it spike to 23 psi in 5th cause mine is an 2005, but they are wrong 22 psi max on 91 trust me