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Old 10-31-2012, 08:08 PM
ard ard is offline
Resident Curmudgeon
Location: Sierra foothills
Join Date: Jul 2009
Posts: 11,984
Mein Auto: '12 X5 35d/E39M5/996TTX50
That actually makes one chuckle... NOx sensor is really a new term for most of us...

You really need many days of use over the same commute to make hard mpg comparisons.
Keep it as simple as possible...but no simpler.
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