Well, here's an interesting observation: with the only changes being a new ignition sensor & a narrower gap (actual may be in the .7mm -.8mm range), my bike popped like crazy on decel. I saw it on the AFM & heard it.
My theory: a narrower pick-up coil air gap has the net effect of less ignition advance. I don't know what else would explain that.
If I had it to do over again, I would gap it at 1 mm. Not going in now just for that, though.
Any other alternate explanations? Not an exhaust air or intake vacuum leak, so let's put those aside.
