I didnt say there wasnt a difference. I said there was barely any difference. I dont have a need to justify a new bike every 3 years so im not going to try. 5hp/tq is hardly noticeable. According to you then the 107 should do better than what it does consodering its so much improved. More displacement, more valves, more spark plugs. Honestly id say its an underachiever.
It's a Harley they always underachieve. They leave that for the aftermarket. Most of us do stage 1 or stage 2 anyway and the m8 will achieve more power than the twin cam built the same is all I am saying. I love the tc but the m8 is a more powerful platform to build off of.