I keep getting a misfire at 3500-4000 RPM, throws intermittant p0261, and have so far chased the injector wire to the relay, it has no breaks, passed wiggle test and has correct resistance so next step is to check wire to ECM and clean/dielectric all connectors -- has anyone any other ideas? Might as well do everything I can before having to reinstall everything.--- Also wondering if a lean setting on my PCIII for that range could cause the code?--------Ah, for the simple days of my three-wire panhead

 

try taking off the pcIII, reset code, see if code comes back