are there any ems's that include a plug in harness or do they all need to be modified. the reason i want this is because the amount of time i have to work on my car is limited and my stock harness has been put together by some idiot that is in love with butt connectors and solder-less connections... in other words haggered.
any information is help even if sent in a condesending way.lol

 

The plug-in EMS models use the stock wiring and sensors. This would not be a good idea in your situation. It sounds like you would be much better off with a flying lead kit installed by a professional. If you don't mind spending more money, Motec and Autronic dealers can make you a top-rate custom harness.