Well the guys that dynoed my car said there is about 15-20 hp that can be gained with a good tune and air/fuel ratio.Do you like the Apexi?why are you going to the Xcal 2?What do you mean by it really smoothed up daily driving?

Sorry for all the ?'s

99 SVT/silver frost....with "some" mods SVT FLYWHEEL 4 SALE!!! PM me