c4mo wrote:The problem im having is with a sbc tpi in a 1985 corvette. The problem happens around 3500-3800 rpm and it will skip back and forth, otherwise the engine is fine. Also this is under load only it doesnt do it in free rev. The spark plugs are new, plug wires are close to new, but was planning to ohm them with a dmm. The hei has a new ignition pickup, and the module along with the coil are new. The firing order is correct of course also. It is smooth at all other rpms, and i have checked every ground on the wiring harness. I have verified tdc on the balancer tab and checked the intial timing multiple times. Any ideas? Thanks
c4mo wrote:Redngold, i think ive seen you on thirdgen.org. Anyway the engine will pull past 3800 it just misfires there, and doesnt after. Im using dynamic ebl ecm, so of course its map based instead of maf now. I attached a notepad datalog where you can really see it at 2:37 mark if you scroll down. My ve tables are maxed out in this area also, so more fuel cant really be added.