Thread: Is America ready for 4-cylinder full-size pickup trucks? Because they're here (GM)
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Old 06-03-2018, 12:53 PM   #36 (permalink)
niky
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If we're talking turbo header design, Mazda's new 4-3-1 deserves a mention.



And it has flapper valves and dual ports!

Interesting way to bypass the heat problems that hobble VGT use on gasoline engines.
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