i am researching some questions for a friend who is not part of this forum and i am a yamaha 2 stroke rider. so please bare with me. anyways, i have a friend with a 2010 yz450f who has the GYTR power tuner, and another friend that just bought a 2016 yz450f. after some research it seems as the Power tuner will work from 2010-2017 450f bikes according to shopyamaha.com. is this correct? Also, my friend with the 2016 is coming from a 2002 CRF450. so the power of the yamaha was a bit surprising to him, especially the off idle "Bark" the yamaha's have. If my friends Power Tuner will work on the 2016, what is a good starting point for mapping to remove the "bark" and smooth the power out? With the research i have done, i know that the stock mapping is different between years, so loading a saved map from my friends Tuner will not act the same between the 2010 and 2016. I will continue to do more research, but i wanted to get this thread started. Thanks for your help and i hope i am not to vague.