Does anyone know what the Fi200R from Cobra does exactly and if it works. The website just says it corrects lean conditions due to changing exhaust or air filter to a freer breathing version. It is like 250 so I'm wondering if it is more tuner friendly than a PC as you don't need a computer as it has ***** or something to adjust it on the bike.

 

Go with a PCIII. It's proven and has a lot of maps & support available, plus it's $250 also.