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Streetracing.co.za • View topic - Intake pipe diameter vs exhaust diameter
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 Post subject: Intake pipe diameter vs exhaust diameter
PostPosted: Tue Apr 05, 2011 9:19 am 
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2 Bar BOOST!
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Joined: Mon Jan 25, 2010 9:38 am
Posts: 2718
Location: CT
Why do guys put say 100mm intake pipes on, but the exhaust is say 57 or 63mm? My logic says the hot air coming out should be taking up more volume. That’s where the power comes from, the air fuel mixture expands? So why do we have these fat intake pipes, wouldn’t a smaller pipe flow better?

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