Is there any difference between MY14 and MY 15

[RatHead]

the tank is steel i thought

 

[motorcycleboy]

It's less radioactive than them were made closer to the Fukushima accident day.. lol

Out of joke i've found some useful info here: 2015 Yamaha FZ-09: New and Improved Fuel Injection!
On dyno '15 model is by 2,6Hhp more powerfull and by 2lb-ft more torquey...
I've start to think again to remap mine which already has the first "agressive" mapping..