Quote:
Originally Posted by Codling
How can you tell a CSL ecu from a standard E46 ecu ? Any coding on it etc.
Many thanks

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Will have MSS54HP written on it for one. As for the actual file that is written in it, no could be anything these days especially if second hand.
If you have an MSS54HP ecu you can have the CSL files written on it though.
So doesn't really matter.
Hope that makes sense!?