Ecu swap wont start

[jimmymig]

Got a suspect ecu that iv tried to swap with 2 working ecu's car wont fire ! Anyone had this before thought they were interchangabel

[Speedtouch]

Which ECUs are you trying - they should have a part number on, e.g. 0 261 200 405.

[E30BeemerLad]

If the car has the EWS system then you need to also make sure that the new ECU also has the corresponding EWS box and the key.

[e30-EVN]

^this.
M52 ecu's are not interchangable unles ews gear that coresponds to the new Ecu is used.
M50 ecu's are interchangable though

[E30BeemerLad]

Don't the later vanos M50's have EWS too, or was it just the M52?

[rich318i]

you can pay to get someone out to code it all up for you but thats £120 for 20mins of work

[E30BeemerLad]

Or you can get DanThe to delete the ews

[Brianmoooore]

Don't the later vanos M50's have EWS too, or was it just the M52?

Maroon label M50 ECU = No EWS.
Silver label M50 ECU = EWS.

They are directly interchangeable.

[DanThe]

Or you can get DanThe to delete the ews

Cheaper than coding

[jimmymig]

Cheers lads will pm dan