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cold air intake bypass valve

Civic model year 1980 - 2000
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Nanteril
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Joined: Mon Jul 01, 2019 6:30 pm
Location: Frankfurt

cold air intake bypass valve

Post by Nanteril » Mon Jul 01, 2019 7:59 pm

Im about to install a cold-air intake system in my 01 Civic... the bypass valves that you have to buy seperate...does anyone know how they work? are they truly needed? or just in really wet climates?

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