Originally Posted by Fsarc
Not sure if I missed it somewhere, but can anyone explain the differences in the amount of time it takes to upgrade to 231e? For example, most times I've read are 2-3 hours of programming at the dealer and as quick as 5 minutes (after a 35 minute read time) for a 231e update from a "tuner" company. Are some tuners only using 231e update on the DME and hence the quick times? If so, shouldn't all the modules be updated together to the latest software version rather than picking and choosing?
The dealer is programming the whole car (tons of modules) because they have to. The tuner companies are only updating the DME. Also, the 30 min read time is not always necessary.