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      08-17-2011, 08:00 AM   #1
drchuck72
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Drives: 2009 BMW M3 Coupe
Join Date: Jan 2011
Location: Toronto, ON

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New Exhaust...Improved fuel economy?

Hey Guys,

Recently had an Eisenmann Race exhaust installed. Sounds fantastic. Couldn't be happier.

Weird thing though, the fuel mileage is at 11.8L/100 km (or 31.8 mpg). Previously, I was getting numbers in the 12.2 to 12.9 L/100km (or 30.7 to 29.1 mpg). Is it possible that the engine is running more efficiently with the freer flowing exhaust?

Thanks

DC
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DR CHUCK
2009 E92 M3 Le Mans Blau on Schwartz. DCT. RAC RG63, KW V3, Eisenmann Race, AP Racing, Vorsteiner GTS5 Front Bumper, Vorsteiner GTS-V Rear Diffuser.