I purchased a tpi harness and ecm kit from a company called fuel injection specialties, in a section in the manual under VSS there is a reference to grounding one of the ecm pins so the ecm doesn't set code 24, when you ground this pin the ecm is not expected to see a VSS signal, this is a 90 tpi speed density ecm.

anyone know which pin to ground.

also I bought plugs intending to run 87 electronics, however switched to 90 setup, the plugs I bought were gapped for .035, is this the correct setting for 90 up, Im using the small distributor and the engine is a 82 LG-4 that was always gapped at .045, so Im wondering if this is where my bad hesitation problem lies.

thanks guys