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Old 12-10-2013, 02:58 PM   #2 (permalink)
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spacemanspif's Avatar
Join Date: Jul 2013
Location: Dirty Jersey
Posts: 748

The New Focus - '07 Ford Focus ZX5
90 day: 32.44 mpg (US)
Thanks: 142
Thanked 204 Times in 148 Posts
Hot air intake should benefit any car that is fuel injected since they SHOULD all measure intake air temp in order to adjust fuel. If not, they should do it using the O2 sensor, either way a HAI should benefit you and the rest of your mods looks like solid choices. If you do a lot of city driving it might be worth it for you to keep your mirrors to change lanes and park safely (if you do a lot of parallel parking)

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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