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      11-14-2012, 04:57 PM   #2
doughboy
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Drives: 2016 M6 Gran Coupe LCI
Join Date: Jan 2009
Location: Staffs

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Yep,

similar thread here a few days ago. MOT man using the wrong engine type.

Regular 'normal' petrols run lambda 0.98 to 1.03 ish.

Yours is a lean burn engine as the forums describe, go back to the garage and tell them.
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