How much will a dyno run / tune cost me approx? Got the serial to usb cable to check the map on the used commander i got and reset it to the stock f4i map, ran good up high but had horrible low end stumble, put the map on for a k&n and two bros ( i have a custom bootleg shorty, kind of close to a two bros ) and now the bike revs through the whole range fine, very very slight low end stumble. Id say its running at 98% now finally.

Anyway i want to get a custom map made for it so it will run at 100%

I know fay has a dyno but im sure their is a premium, im assuming my best bet is faster motorsports?