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I could not get your link to open. But the Cobra tuners are "Fueler" type tuners meaning they piggy back onto the bike and trick the ECM into adding or subtracting fuel as needed , they make no timing adjustments.
Do a search there are a lot of threads on them and others like them ,DFO, Fuel pak etc.
IMO for about the same $get a PowerCommander from Fuel Moto and properly adjust both fuel,timing and front vs rear Cyl or a little more $ and get a flash tuner like the Power Vision ,TTS etc
Nightrider Xieds will do the same thing for $100.00 less. And I think they're more reliable.
My daughter's boyfriend had an older version on his bike that cost us a trip to the Bikes, Blues, and BBQ rally. Finally disconnected the thing and it's running fine now. So what does he do? Buys an updated version of one.
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