I am very pleased with EBR ECM. It does have a couple of problems or at least they are niggles to me.
The EBR does not have to meet exhaust emissions, so it will meter fuel for power not to get through emissions, and the engine will run better.
There is a little valve that bypasses the throttles allowing air to flow into the engine. With the standard ECM this valve opens a little when the bike is in gear and the clutch out, increasing the revs at zero throttle by around 4/5 hundred rpms. (Try putting the bike in gear and then letting out the clutch on a track stand).The EBR ECM opens this valve more increasing the rpms by around 1000rpm. The effect is that when you close the throttle you do not get the full engine breaking, it is like you still have the throttle open a little, and the bike does like to run on at 2500rpm. This assists the slipper clutch in preventing the back wheel from locking up under hard down changes. Personally I have been riding big sports vee tweens for many years and have not had any of those problem as I know the effect of closing the throttles of big vee twins at high rpms, but I suppose it must be safer if they are doing this for race bikes (I would have thought racers would have known what they are doing - unlike some of the middle aged born again bikers you come across) Before you old guys start shouting I’ll be sixty next year.
The upside is you lose the fuel surge at low rpms and can drive the bike down to 2500rpm without the shakes and shudders, making the bike much nicer to drive.
The annoying cold warning light disappears with the EBR ECM along with the engine cut-out, should you pull away with the stand down.
My bike has an annoying habit of stalling when cold just at the most inconvenient time. It only happens once when you first pull away and soon learn to be a bit careful when first driving off. Over all? a great improvement. I also have a FMF Apex exhaust…… very very loud.