Difference between ECU's??
I checked ebay and most of them are close in the part numbers, but not the same
I am looking for PN: 0 280 800 304
I see ones that are "x xxx xxx 400" " "...212" "...444" "...320".
Will any of them work or do I need to make sure I get exactly the same one?
(We must consider the fact that I do not know with certainty that I even have the correct ECU in mine!!)...so on that note -- any way to double check I have the correct ECU in mine?
Much appreciated

Thanks
Did you ever find out about this? I have several different ECUs for my 89 300E 3.0L. The one that came with it when I bought it used was the xx304 part number. I have swapped out a couple of different ones to see if they made any difference, but i almost can't tell. I would like to find out what the differences are to the part numbers.
Thanks.


