I have to floor it when cranking it over to get it turned on, especially on cold start ups. It's like a dirt bike/quad that you have to give it some gas when starting it. I think it's the MAF actuallyIf giving it more throttle @ the start keeps it from dying, then it sounds more like too much fuel initially. Should be able to get that right once the real tune is in there. Wouldn't think its from the cams. I had the same thing until tune was worked out.