19 350 EXC-F US ECU programming. Removed intake reeds, blocked only exhaust emissions, removed exhaust pipe screen, and added JD tuner. All can be done within an hour. Easily programmed JD tuner to open exhaust settings. Huge difference as now has a nice smooth response through the entire throttle. Much more power and runs cooler. Feels much like my stock YZ 450!
Install about 2 and a half hours mostly routing wires. Easy to program and really see a difference in power range installed new yoshimura full exhaust system at the same time. Both of them work great together.
Put this on my 2019 FE450, with reeds removed and exhaust cap screen out, the power is drastically better. Also put 52 rear sprocket and for about 250 the bike rips. My previous bike was 2016 YZ450 for comparison