Eu am modelul nou , si are tot patru mufe :blink: , este tot VDO , si are spatele albastru deschis , obc ul meu are codul :65 81 8 351 055 Citez din www.bmwe34.net : The e34's have 2 different types of OBC one for the BMW 518i,520i and a different type for the BMW 525i,530i,535i,540i. There are two types of OBC but you can fit ANY OBC IV (without the coding plug socket) into a 518 or 520 with a little modification. I successfully retro-fitted an OBC IV (with GONG and Temp Sensor) into my 1995 520SEi where the OBC DID NOT have the coding plug socket in it and it's fully operational. All the OBC IV's out of higher spec cars eg.525, 535, etc (without coding plug socket's) are technically dumb on their own as they have no information about the car's engine type, etc. This means you go to BMW (like i did) and buy a coding plug for £20 (UK). BMW need to know Year, Model, Petrol or Deisel, Plastic or Metal Fuel Tank so that the coding plug has the correct calculation's for your engine, eg. MPG,etc. You then take the coding plug apart so your left with a mini PCB. You then open your OBC and solder the mini PCB onto the back of your OBC. It's only 6 pins and is super easy to do.