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Old 09-27-2012, 07:43 AM   #55 (permalink)
suspectnumber961
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Join Date: Mar 2008
Location: I flitter here and there
Posts: 547

highcountryexplorer - '86 Nissan 720 KC 4x4 ST with fiberglass cap
90 day: 21.78 mpg (US)

Elroy - '03 Ford Focus ZX3 w/Zetec DOHC engine
90 day: 32.89 mpg (US)
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As a TEST...I installed this block in my Focus intake. Weather won't permit testing a full tank...this was just a test to see how it runs. Runs about the same...anyone not knowing it was in there...wouldn't likely be able to tell the difference.

Made of a heavy plastic funnel...just forced it into the corrugated part of the intake tube after the MAF.





Opening in cone is around 1 1/4"...which is approx the same as a half throttle opening (45*) at the throttle body...so in most situations it just acts like a dirty filter ABOVE a certain throttle opening? Used around .61 square " per L from above posts as a guide.

Scangauge shows high mpg for first mile on highway after leaving town...but it settles down after that.

Will reinstall and test next summer.
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