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Registered
Join Date: Dec 2004
Location: Harrisonburg, Alexandria, Va.
Posts: 465
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It holds extra vacuum so that certain things that are vacuum actuated or need vacuum to operate will do so when your engine isn't pulling down vacuum as hard.
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'91 Jeep Cherokee 4.0L HO - Daily driver
'83 Callaway 944 2.5L turbo - Soon to be daily driver
'83 Porsche 944 NA - sold
'78 Porsche 924 NA- RIP
'89 Porsche 944 S2 - Parted
Looking for a nice 944S for a daily driver.
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