Steve's CFMoto 650 NK（春风 650 NK）

[Steve_Halt]

Besides idling at very high RPM, the new ECU brought another problem: delayed throttle response. Both from roll-on or from standstill, when opening the throttle there is a delay in engine response.
It is pretty hard to describe, but it feels like: open throttle - engine bogs down - and - go!
As everybody understands, that results in pretty much uncontrollable acceleration, since you never know how long it's going to take for that "go" to kick in.
What worsens the problem is that I don't really know much about electrics / electronics. That means I cannot sort it out myself. My option is to either continue buying those "electrical black boxes" and hoping that a certain combination of those will finally work or to ditch this bike and go for something else. Ditching a bike would be a regret since I have it plated, registered in my name, and I have insurance on it.
I have a gut feeling that this problem may be related to TPS, but, as ZMC888 pointed out, it is not sold separately, which leaves me with no choice but to buy the whole throttle assembly (800-something yuan), which is not what I want to do.
Now what I got on my hands are 2 ECUs:
1. Came with the bike, throws errors, engine has a flat spot (bogging down) anywhere between 4000 and 6000 RPM. But has proper idle and immediate throttle response.
2. The one I bought from the CFMoto Tmall store. This one doesn't throw errors, has smooth response through the RPM range, but makes the engine idle at crazy high RPM and has a significant throttle response delay.
I am very disappointed.