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Re: Does Compression Ratio effect fuel economy?
a header is a word for an exhaust manifold made of individual tubes for each cylinder that meet at a collector. an exhaust manifold is the general term for the piece that collects exhaust fumes from the exhaust ports and combines them into the exhaust pipe. The intake manifold divides air from the intake pipe or carburetor into the individual cylinders.
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Dr. Disque -
Current cars:
2008 BMW 135i M-Sport
2011 Mazda2 Touring
Past cars:
2007 Mazda 6S 5-door MT
1999 Ford Taurus SE Duratec
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