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Power Strokes
7.3 Aftermarket
How to tune a wastegate
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[QUOTE="Charles, post: 94897, member: 103"] A dual port wastegate [i]is[/i] a pneumatic cylinder... with a spring loaded shaft bias and a valve on the end of the shaft. This is precisely why I run very little spring pressure and then control the shaft movement by applying the air to the top to hold the gate shut, then as my duty cycle increases the 4 port solenoid progressively applies more and more air to the bottom and less and less to the top until the desired boost is acheived or the gate is maxed out open. [/QUOTE]
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