Originally posted by Viss1:
Nice car. Is what I've read true about the stock air filter assembly robbing about 10HP? Apparently the filter ass'y plays a role in the PZEV strategy...
Yeah, we gain something like 8-9whp and 8ft-lbs of torque just with the intake. Header on the PZEV gains quite a bit also along with a 2.5" exhaust. I think Draxas was making 151/150 with a 2.25" exhaust and switched to a 2.5" and made 160/???. These engines are so choked off it isn't even funny to be honest with you.
2004 Focus PZEV 2.3L - KW sport suspension, SP camber plates, Eibach front swaybar, FS intake, FS Stealth exhaust, 3.82 Final, Torsen ATB, Prothane MM insert, E1 CSVT wheels
1/4 mile - 15.201@89.4mph
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