Okay Ya’ll, my 88 Ram 50 2.6L (G54B) 5spd MT 4wd w/Mikuni-Solex carb, pings and or bogs down SOMETIMES. Usually when in higher gears and going up a hill or simply hitting the accelerator past the 1/4 way of pedal travel. Sometimes it’ll start pinging 1st, then loose power, sometimes just looses power. It also SOMETIMES cuts out in lower gears at high rpms (3-4k). Here is what we’ve tried so far. New: fuel filter, spark plugs, plug wires, dist cap and rotor, throttle position sensor, O2 sensor, 2 thermo valves that control vacuum in carb system, reman Cardone ECU. Rebuilt carb with new needle, accel pump, aux accel pump, enrichment pump, secondary throttle vacuum/depression chamber, feedback sol valve, gaskets of course. Cleaned EGR valve. Rebuilt distributor. Checked engine temp sensor resistance from 68 to 180 deg F. Resistance drops consistently as temp increases. Replaced ign coil. Checked exhaust pressure before converter. Temporarily boosted fuel pressure w/electric pump. Checked ign coil ground to ECU harness. I don’t have access to a Miller ECI checker (MD 998451) with “E” harness (MD998456) which would allow me to check the Feedback Carburetor System components while driving. My limited understanding of the ECU is that it has ROM and RAM. If it has RAM does this mean it has the ability to “learn” and perform differently under certain feedback conditions? I welcome any and all thoughts and suggestions on how to troubleshoot this. Randall in Nashville TN.