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Old 05-27-2015, 11:04 AM   #11 (permalink)
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Join Date: Nov 2013
Location: Apple Valley
Posts: 2,084

Winsight - '00 Honda Insight
90 day: 56.69 mpg (US)

Miaderp - '95 Mazda Miata
90 day: 28.53 mpg (US)
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On the insights, it actually makes a difference. I have adjusted the valves on a couple extremely loud cars, and they got a noticeable power increase, and got a massive noise decrease. If you haven't adjusted your valves for more than 100,000 miles definitely do it!


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