> I bought a 025-906-021C ecu  (black plastic case)
> a few days ago as a spare
> So today as a test I pulled out my
> was 025-906-021 without the c (aluminum case)
> and put in the spare it seems to start up & run,but ...
> has a hard start issue after warming up
>
> anyone know how the C revision is different ?
well according to the VW dealer the C is the original
model and without the C is the updated version
but both should work ...
I guess i will put back in the non 'C' untill i get stranded
with a hooped ecu :)