Aye mate, Yes that is a strange one . More info on the miss: it misses slightly all the time but gets aggravated when using the signals? If not all the time then is it at part (minimal) throttle, WOT or?. I'm thinking we gotta deal with the miss first. & I'd check the voltage drops at the coil/ecu etc and clean ALL terminals/connections & also see what your charging/running voltage is. that'll get us started