After driving this engine (b18c2 in eg civic) for over 2 years I decided to remove the dodgy piggy back ecu. That's fine, but I discovered the loom has been hacked up in a very strange way. Looking at the red/blue (knock) is bridged to the brown (logic ground) and the other I think is injector connected to not sure. Can anyone explain why someone would do this? I'm afraid to cut anything yet as the car actually runs fine at the moment.