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i took my vafc out today. reconnected all the wirings to my stock ecu. however, my engine like was on after i turn on my ignition.
5 G lude doesn't have the VTM signal right? the apexi vafc manual says NO. when i installed it, i plug the VTM from the vafc to my ecu (one of the holes). now, i cut the wire when removing the vafc, but i haven't removed the left over VTM wire that i plug in my stock ecu. is that casuing the engine light on, or?? i double checked all the wirings.
please help, thanks

peter

 

could, if you didn't start with it then take it out and see if it changes things.