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Old 06-19-2010, 11:23 AM   #2 (permalink)
bhazard
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Join Date: Mar 2008
Location: Toledo, OH
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2012 Golf TDI - '12 Volkswagen Golf TDI
TEAM VW AUDI Group
90 day: 45.51 mpg (US)
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The boost increase will bump up your power of course, the exhaust just lets that power come in sooner.

This is where the line is drawn between turbo and N/a gas engines. These performance upgrades can help your mpg with a turbo, but usually not with n/a. More torque down low can help mpg.

Of course thats only if youre driving for mpg lol.
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'05 Outback XT, 19 mpg

BP-turbo 93 Festiva (long gone)
1/4 mile - 12.50@111.5
Best MPG - 36.8
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