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      04-07-2009, 06:57 PM   #1
thetryal
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Talking boost gauge problem, probably easy fix

i was trying to install my mechanical boost gauge today and i have a problem.

when i sit idle, the needle goes to -18. when i rev, the needle flies up, as it should.

i used a T-fitting and connected the hose to the boost gauge to the hose under the hood. after looking throught the index of both gauges installed, i decided on the hose that connects to the diverter valves. this connection is about 4" above where the Y fitting goes in to the DV's.

what could i be doing wrong?
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      04-07-2009, 07:04 PM   #2
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Nothing wrong with a negative reading. The negative reading is the amount of vacuum present.
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      04-07-2009, 07:12 PM   #3
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i didnt have a chance to drive it. if i were to drive it, would it 0 out then read appropriately to the cars actions.
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      04-07-2009, 07:17 PM   #4
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If you give it the right amount of throttle it will get to 0 and then head higher (under load). I can cruise on the highway and never see positive boost. Just sitting still an hitting the gas pedal will never show boost. The car has to be under load.

I think you are fine, take it for a drive before you consider making any changes.
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      04-07-2009, 07:24 PM   #5
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is it fine to stay with the little plastic hose that came with the kit or should i look for a better one?
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      04-07-2009, 07:34 PM   #6
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Would have to see it, but little plastic hose should be fine.
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