Hi guys, the situation is I have a street car 1971 911T rebuilt to S with PMo and 123 Ignition Tune + Bluetooth . I consistently have black plugs, fouling number 4, heavy pops under decel and poor running below 3000 RPm. I’m struggling with timing this motor and tuning these carbs.
Engine is newish and compression checks out at 149 across the board. Dynoed at 200hp. I have hot Solex cams. My PMOs are 130 jets, 200 air, F16 and 60 idles. I have unburnt fuel at low RPM. They balance at 7. The local tuner is not a believer in 123 so I’m on my own and need your help.
