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Old 05-05-2011, 07:54 PM   #70 (permalink)
tjts1
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Quote:
Originally Posted by Flipper_1938 View Post
Aircooled vws don't live very long with a lean fuel map. They historically have used excess fuel to help with engine cooling.

If you really want fuel efficency, swap in a small water-cooled motor.
With an EFI system and wide band O2 sensor working in closed loop, you could use water injection to allow you to run the engine as lean as you want. It would also be interesting to see if you can replace the belt driven fan with PWM electric fan run in closed loop with a cyl head temp sensor.
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