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Opinion Needed: supercharger aftermarket boost gauge

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Old 07-10-2015, 07:30 AM
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Default supercharger aftermarket boost gauge

Hey everyone. I have a 2004 ss supercharged and I installed an aftermarket boost gauge and it reads the vac normally (-20), but it will never go past 0. Could it be just a bad vacuum line? I've ensured there are no holes or crimps in the hose. Thanks for your time guys
 
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Old 07-11-2015, 07:52 PM
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Sounds like you hooked it up to the wrong line. If you hooked it up to any of the lines coming off the vacuum tree on top of the blower- those never see boost, but do have vacuum.

You need to tap it into the vacuum circuit that originates at the LIM nipple at the front of the engine. There is a T on there, and it wraps around both sides of the engine. That sees both vacuum and boost.


If it is hooked up to that circuit, either your gauge is bad or you're actually aren't making any boost for some reason.
 
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Old 07-13-2015, 10:47 AM
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^^that
 
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