ECU Difference/Compatibility

[JJ 911SC]

May have find the answer as I did more Googling this morning.

I wanted to know if they could swap those around. Probably not if the ".13" is for ROW.

I was looking to see what is the difference between these 2 version 911.618.111.05 & 911.618.111.13

The ".05" google return from Porsche 911- US list it as: Porsche 911 Carrera, Years 1984 to 1986
930/21 3.2L Engine (US)

The ".13" google return from Porsche 911- Euro list it as: Porsche 911 Carrera, Years 1986 to 1989 (ROW)

[E Sully]

The chips for the motronic can be swapped. The older boxes can be easily updated to take the later chips. ROW did not have oxygen sensor. I had a euro harness and US box when I purchased my 3.2 for swap into my 1973. I added the oxygen sensor wiring to it. I have read one of the best factory chips was for the Club Sport.
Steve W did a review of the different chips.
Carrera 3.2 Performance mystery and Chips (long) - Rennlist Discussion Forums

[JJ 911SC]

Thanks Ed.

The ".05" was (now using a TEG/GT) on my car and matched the engine.

The ".13" is coming of a late 83 that was fitted a 3.2 as they run out of 3 liter.

I'll will get the engine type to see if that is the case or it was fitted with a later one.

I'll will as ask if there is a Oxygen Sensor fitted.

I kept you posted.