no you don't, the zx2 has VCT on the exhaust side which is very different from the SVT Focus with it on the Intake Cam. Ours is purely an emissions piece of the motor where the focus is used to increase performance. The people that are serious about performance with the zx2 generally remove the vct system or swap to a non-VCT focus head. You'd be better off dropping in an SVT motor. The zx2 vct is basically a replacement for the EGR valve they didn't put in our cars.