Hi I just bought a chip and I'm trying to install it. The install instructions don't seem to match that of what is in my car. I have a '93 325is. I was wondering if anyone had any idea how to install it. I found where the ECU campartment cover is but after that my car doesn't match the instructions. In the instructions it say there are 6 locking tabs but in my car there are three screws. Now I've tried to take those three screws out and take out the plasic cover. When trying to do so I started to hear the plastic break. That's when I stopped to ask you guys for any help you can give me when installing the chip. Thanks to anyone who can help