Color me asleep, doing Judas Priest and did not notice, sorry. Heating of manifold is still not going to act like that . W/O s/c the engine has many sensors and it its not happy it can cut the fuel flow in an instant. Suggest you look into a DASH DAC monitor if your so inclined, it will show all the gizmos that are working under the hood and log them too if your interested. Woody