I am stumped on an issue and posting here is my Hail Mary. I have read many posts and tried everything others have done and I can think of.
2009 Formula 370 SS, 496 Mag HO. DTS 1A306986 (STB) 1A306867 (Port)
The STB engine lags about 200-400 RPM vs port on most everything over 1000 RPM. Up to...