pica, peak tune it by starting it and seting the idle and then start turning the high end screw in untill you get max rpm's (will start sputtering if you go in to far)then back her down about 300 rpm by comming back out on the high speed needle, you really need a tach but if not just back it out till ya get a fair amout of smoke and ya hear a small decrease in rpm, not to much though