Well I spoke to the gentleman about his cam. I told him about the Xfi, he didn't know such a thing existed. He asked me to not put up his camshaft specs, but he did tell me what they were, and they are not similar to an Xfi or the 3Tech copy. Hmmm. I must say I am interested to see what his can do, the only problem is I would have to baseline my Metro for a while before I did the cam swap, and I had planned on driving the Acura for the winter. I know what my Firefly got for an average MPG on the routes I usually drive, but the Metro has twice the KMs on it, so in order to give even a rough idea of a before and after comparison, I'd have to put some miles on the Metro as it sits first. If I decide to sell the Acura and get stuck in a ratty Metro for the winter, this cam better work!!