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Old 09-16-2010, 08:20 PM   #16 (permalink)
hackish
Calibration Engineer
 
Join Date: Jan 2010
Location: Canada
Posts: 86

Subie - '00 Subaru Impreza STi JDM
90 day: 22.49 mpg (US)
Thanks: 1
Thanked 18 Times in 14 Posts
One thing that helps all subarus on the fuel economy thing is an aftermarket exhaust system. It's tough to get one that isn't obnoxiously loud. I recorded almost 15% improvement on my 2.5RS (about 10 years ago) by installing headers and a complete exhaust system. From the factory they are very restrictive.

-Michael
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