The drivetrain came out of a '97 Jetta TDI, complete with electronics. Making the swap happen took two years and a LOT of fabrication to make it work/fit/look like it came that way. Definitely not for the faint of heart!
I'm currently getting 64 mpg out of it, although I just started experimenting with injector pump timing in the ECU after someone on the TDI forums told me about it. From what I have read, most people are seeing another 3-4 mpg out of their cars, and apparently the European-spec cars run more timing than the ones we got here. It's pretty neat to be able to plug my laptop in and run diagnostics or change tuning parameters.
I still have some aerodynamic experiments to try, but I've been too pressed for time to do much...
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