I'm very interested in the M800 from what I've seen of it. How much did the M800 unit run you with install and tuning? Was your tuning done on a dyno or real time world tuning aka on the road or does it have the ability to adjust fuel and timing curves on it's own once you set a parameter? Also how much boost are you running with the smaller pully? It sounds like it could even give a NA VX a little kick even without a SC by alowing it to run more efficently and maybe even free up some extra fuel due to how rich we run with the stock ecu. Sorry for all the Q's but it seems to be a good product for our VX's.