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Old 10-01-2010, 04:56 PM   #20 (permalink)
Phantom
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Join Date: Jan 2010
Location: Independence, KY
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Blue Meanie - '02 Volkswagon Golf TDI
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90 day: 48.52 mpg (US)

Wife's car - '05 WV Passat TDI

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Going from some info I have picked up along the way and some reading of "Engine Management: Advanced Tuning by: Greg Banish" I would say the AFR you are looking for is around 17.64:1 (lambda 1.2) for close to the same emissions as running at 14.7:1.

For cars that have a issues when going to/from lean burn aim for 15.43:1 (lambda 1.05) according to above book. I have not finished looking over the book but just to let you know there is not much of anything on lean burn in it.
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