identiffing standard ECU's

[rsx84]

i'm in need of replacing my standard r32 rb20det ECU and have been told i need to match up numbers'.....

my problem is my ECU seems to have 2 sets of MEC numbers on it??

the one i think is not the right one is on a removable lid to the ECU.. the other is on the slim side next to where the little indocator light and dials are. if anyone could lets us know where these numbers should be that would be great....

Cheers Matt.....

[Jay95R33]

I think the best thing to do is pop the lid off the ECU (make sure it's unplugged) and read the MEC number that is stamped on the actual chip.

In theory, the MEC number stamped on the side of the case (not the lid) should be the same as on the chip, but you never know.

Sounds like the lid was swapped for a different one at some stage.

Cheers

J