Comments on my 340 plug under mag
Ok here is my timing MAP. This is Kpa vs RPM. Many places are never hit due to vacuum deficiency. The high advance at idle helps to compensate for in and out of gear differences. With this idle setting there is very little like 100 RPM in and out of gear.
Top rows are WOT ie low vacuum. This is where I believe I need to retard.
Lower rows is higher vacuum.
Ok here is my timing MAP. This is Kpa vs RPM. Many places are never hit due to vacuum deficiency. The high advance at idle helps to compensate for in and out of gear differences. With this idle setting there is very little like 100 RPM in and out of gear.
Top rows are WOT ie low vacuum. This is where I believe I need to retard.
Lower rows is higher vacuum.