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Old 03-20-2013, 11:59 AM   #4
Cathexis
Scooby Specialist
 
Member#: 335445
Join Date: Oct 2012
Chapter/Region: MAIC
Location: Ashland, VA
Vehicle:
2012 WRX - BLK STIG
Stg. 2 - 287whp/317wtq.

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Quote:
Originally Posted by Brent22 View Post

What do you mean "removal of the federal government"? Tuning it for cleaner emissions?

I see the Cobb dyno charts on the website but is there any documentation to what fuel economy increase some may expect to see? I know it all comes down to driving habits but just a ball park assuming the driver is shifting and applying pedal pressure with fuel economy in mind.
EPA. You will likely see a decrease slightly in MPG because tunes richen at lower rpms vs. the factory tune that stays lean until the stratospheric rpm range. Lean is bad. Look at the cobb charts with A/F checked.
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