Quote:
Originally Posted by MGM135is
I thought Dinan had to reverse engineer the ECU just like everyone else.
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No. Back when this tune was developed, Dinan had an exclusive relationship with BMW where they cooperated at an integral level. They got the codes.
That's why a few years ago, most Dinan dealers were located inside BMW dealerships.
That cooperative agreement has ended, which is why you see Dinan basically making piggyback units for the new series cars (they don't have access to the unlocked coding anymore) and why many Dinan dealerships are independent shops now. (Some of us are lucky to have our BMW dealer still be a licensed Dinan dealer, but I understand that isn't all that common anymore).