Conforti performance chip

[Josez45]

I'm trying to chip my 1984 528e with the conforti performance chip. In order for the chip to work on my 84 it needs the "newer" green label ecu.However when I install a green label ecu in the car (with or without the performance chip) it does not run well. The car will bog and sometimes die under acceleration. I have tried two different green label ecus and I'm having the same problems with both. When I put the original yellow label ecu in the car, it returns to running normally. Anybody have any idea what the problem could be?

[Mike W.]

Don't know about the color, but IIRC the early one is a 007, which is not chipable, the later one is a 027, which is and what you want. What are your numbers. (it starts with something like 0261 200 ...) But the last 3 digits are what are commonly used. Of course that's the Bosch number, not the BMW number so you won't find it on Realoem.

[Josez45]

Both of the green ecu's I have are 0 261 200 027.

[Mike W.]

Oh well, I was hoping for a simple mismatch, that's all I've got.