first you put it on your kitchen counter. Go out to the garage. GET THE BIGGEST FUCKING HAMMER YOU HAVE. AND BEAT YOURSELF IN THE HEAD FOR BUYING THAT JUNK.
(that was nice compared to what most of the others would have said. you will get a lot of responses saying to sell that on ebay and get a real tuning method. i dont know how much help we're gonna be.)
you need a dyno with a wideband... that's the only real way to know what's going on.
generally though, people will pull a little fuel out at high rpm, but it's a guess and it could cost you your engine if you play around with that fire.
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