justinde

Great, thank you.

I have a 1995 M3 with an S50US (basically a bigger m50 vanos) with a G4x plug'n'play. Im having an issue where the engine is backfiring out the intake when I turn on the ignition and wait for the tachometer sweep. It also has a hard time starting if i attempt to start it while the tach sweep is in progress. It doesnt happen every time. Does the G4x do a spark test when the ignition is turned on? Im not sure how else this backfire would be happening, but it keeps blowing up my idle control valve hose and its really annoying and im not sure what to look for. Thanks!