03-08-2014, 05:41 PM
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#3722
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Senior Member
Join Date: Aug 2013
Drives: 2013 Firestorm FR-S, 2016 DGM WRX
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Quote:
Originally Posted by Thatruth2001
What do you guys think about the header at 3.5 rpm? Additionally, post your thoughts on the mpg impact? I have have been quite regarding what I have been averaging the past couple of weeks but I have seen a nice increase...
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any particular reason as to why?
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