Your issue sounds like you need the o2 controller.I was texting with Nels about it last night and he thinks it's perhaps the throttle position sensor needs adjusting. Can anyone here comment on this? How would I go about adjusting the TPS if that's what is causing the issue?
I have the same flash but with OEM exhaust & I am experiencing abrupt throttle when going open to close, close to open. Nels had me adjust the TPS, it helped but didn't fix my bikes problem.