Focus Fanatics - View Single Post - I must be getting old... :-) DIY 2012 intake modification
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Old 04-03-2012, 02:08 PM   #11
The Professor
Join Date: Oct 2003
Fan#: 1083
Location: Ripley, WV
What I Drive: '13 Mazdaspeed 3; '87 'Stang

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Originally Posted by Duffman355 View Post
I couldn't believe the stock compression ratio when I first read it. My engineer buddy wasn't phased at all though.
A big reason for the exhaust being so loud and that little sucker pulling in so much air. My Mustang is 12.5:1 and it is insane.
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