Eventplannerla

I'm getting an ECU for my 2018 TT RS and according to one vendor it days about an hour to download and Dyno the car. Another vendor quoted me 3 days. Why would an upload require 3 days? This vendor informed me that the ECU is actually coming from the manufacturer in UK and not APR.

Maybe someone can provide more details?

Huey52

When I got my A5 tuned (Stasis-APR) the ECU had to be removed, sent off to APR for re-programming, and returned/reinstalled. It took closer to a week. Some ECU's can't be reprogrammed in situ depending on how they are mechanically and/or firmware locked or given a vendor's unique process which may involve post-load QA testing.