I got my ECU’s back from Roger, aj6engineering. He found no faults it either one. Which I am kinda glad but would have loved for it to be my problem. After over 7 months, I put the 6cu back in, it started right up after the fuel circulated. I drove it around a bit, nice, smooth thinking “cool”! Then I gave it some gas, lots and it immediately bogged down and backfired through the exhaust a few times. Not a steady backfiring but a few and around 4k rpms where the engine would not rev past!
I have replaced practically everything fuel or ignition related. Tank, pump, regulators, had injectors cleaned, new stuff in the dist, wires, plugs, ignition module. I have a vacuum switch and a manual switch that works together to richen the fuel. The throttle switch reads like its supposed to.
So, the one thing that is about 4 years old is the ignition coil. Really not old for a coil but its about the last thing I can think of. I forget the ohm reading I need for a single coil so was going to ask if there are any preferable ones that most have had good service with. Any suggestions?
It revs up nicely to around 4k then It just bogs, the occasional backfire, almost like a rev limiter but I am pretty sure these did not come with that feature.