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Old 03-23-2015, 08:59 PM   #1 (permalink)
spacemanspif
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Join Date: Jul 2013
Location: Dirty Jersey
Posts: 748

The New Focus - '07 Ford Focus ZX5
90 day: 32.44 mpg (US)
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Intake Runner length??

Long runners are good for low RPM power, short runners are good for high RPM; or so I've read. My Focus has a vacuum activated intake runner controller, presumably to maximize low and high RPM power instead of compromising. Would wiring the control arm in either position give me a boost in MPG?

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-Mike

2007 Ford Focus ZX5 - 91k - SGII, pending upper and lower grill bocks - auto trans
1987 Monte Carlo SS - 5.3/4L80E swap - 13.67 @ 106
2007 Ford Focus Estate - 230k - 33mpg - Retired 4/2018
1995 Saturn SL2 - 256K miles - 44mpg - Retired 9/2014

Cost to Operate Spreadsheet for "The New Focus"

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