Good morning fellow calibrators thought I would post up some updates on the M57 truck one of my customers has. The vehicle started it's life as a 3.5 Eco Boost truck with 3:55 gears and 6R80 transmission. Joe decided he wanted to go down the rabbit hole and get a BMW M57TU motor installed when his Eco Boost engine failed. He ran the truck with a BMW stand alone ECU with a manual transmission for a while and it worked great. But over time he decide to try the original 6R he had on hand just lying around the challenge here was to get everything to work and function as it it came this way would be a huge feat. He started with milling his own adapter plate seeing as no current company made a adapter he could use. The 3.5 Eco boost engine is based on the Duratec platform similar to the ford 3.7L engine. Once he got the stock converter and transmission mounted came the hard part making it shift and drive. He attempted some changes with no luck and no RPM signal. After a while he reached out to me and I had him send over his stock file for evaluation. We tried a few things and before we knew it we got the RPM signal to populate the stock PCM. after that it was on making the file act ad operate from a gas/DI platform to a DSL/DI platform. After a few days I had the vehicle shifting and driving around the streets of Canada. From there he would load some file drive around and send me log files to evaluate. After hundreds of hrs of testing and logging data I have him in a good place but there is always better in my eyes one of my compulsions. The truck has been on the road since late December and with no issues thus far here is a current log of the truck and I'm working with him this week to put some final touches on the file to get it a smoother feel vs a just driving shifting feel. These Ford PCM's being torque based are extremely affected by any model changes and the trans uses this data to complete shifts with specific pressures and firmness as well as how to apply the TCC. If anyone else is interested in a similar project you can reach out to me at [email protected] I love to make these odd projects run and its something new to advance my knowledge and understading of how these transmissions are affected by different engine combos.
I have quite a bit of experience with the 6R80 platform in both its V8 and V6 configuration I personally think its a outstanding stock trannsmission and has all the great features that make it something that can last weather its in a 250 hp vehicle or a 650 HP FI configuration.
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