Heres a pic of the head on the bottom, and the SPI IMRC controller on the top. Idea here is to iscolate the torque and hp powerbands hence enhancing them, which it does quite well. The backward's D shaped ports are kept open for lowend torque while the circular ports arent open (the imrc unit on top has a rod type actuator with butterfly valves here) these arent opened till about 3500-4000rpms but we vary opening them due to different setups.. also checkout one of my buddies sites www.cardomain.com/id/jeffescortlx he's done a lot with the cvh stateside in the 2nd gen us-spec scorts, right now he has a 1.9block mated to a 2.0 head (since he blew the block :-x) running 20psi on a hybrid ihi.. sorry to make this sort but this is what I got right now, I'll be back in a lil' while got to run, thanks for the info. Anyone overthere successfully mate a getragg quaffe german mtx75 6speed to a cvh/zvh setup? I'm thinking about doing this.. focus svt's here have them equipped fwd and i hear it's a solid addition to the mtx75 family..