GTMLS3

I bought an LS378/480 and computer system. A sol. valve pt. no. 12606684 vapor canister valve, came wit the computer package. I have put the engine in a 1991 camaro and/which does not have a vapor canister. What do I do with this valve?

FormulaBoat

iTrader: (1)

You can just vent it to atmosphere with a small filter on the end, but usually a stock calibration will assume it to breathe fuel vapor in high concentration at first. Hopefully closed loop mode can handle and compensate it being just air (lean).

Or, try to cal it off so it does not actuate. Cal the diagnostics off and don’t even install it.

Few choices.