I'm TJ from Oklahoma. Thanks for letting me join. Most of my experience has been on Cummins, CAT and Detroit as far as tuning goes. I'm educating myself on tuning my own bikes. Currently own an '03 400EX, '99 ZX9R, '18 Streetglide, '03 WR450F, and an '18 Z125. I know HD has the Delphi ECU locked down pretty hard, and most of the tuning info I've found for the Z125 is all aftermarket. I do have BDM, KESS V2, ELM327, Healtech OBD-K01 (which doesn't support the 21175-1400, yet), I have a pretty good collection of bike service manuals on PDF. If I can help, I will. Thanks again.