"It is a pity this is not widely known by Volvo
mechanics and owners of this engine type"
I just completed the instalation of my D2-40 and it states clearly in the manual what the idle speed is to be set at.
I searched the bavaria forum and found nothing to support the reply by "Alf" accept that there have been SOME reliability
issues with the EVC box, and there is an updated box.
Part# 3843668 updated version is #21120710
I just checked my new engine, deliverd last year, and it does not have the updated EVC box, so I will be ordering it today. I guess VP is leaving it up to the customer to dig this info up on their own.