WTF? on the ECU
So I had a problem traced to my computer, and had the whole thing replaced. We bought a used computer (housing and everything, not just the chip), and had it replaced.
Well, I've noticed a small loss in 5th gear power, the AC doesn't blow out as cold as it used to, and the cluster gas gauge, nor the on board computer gas range works.
Everything else is exactly the same.
I opened up the glove box and checked. All the numbers match exactly, my only concern is someone took a paint marker and wrote "1985 528e" on it. I have a 1986 325e, so I know it came off a computer around the same time, so I would believe they are interchangeable without this level of difficulty.
Anyone know anything that might be the cause, or have any ideas?