Aftermarket boost gauge acting strange [Video included]

[TehRiceBandit]

Boost gauge is acting up. Problem with the sending unit or a boost/vacuum leak is causing this? What do you guys think? Thanks in advance

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The problem isn't consistent but happens frequently, it's been getting more frequent. Usually sticks to full vacuum when I'm in 5th gear on the freeway then when I enter boost it goes into boost then goes straight back. Recently its been sticking to 5psi at idle like in the video.

Did a boost leak over the weekend, TB shaft seals are leaking, sounded like my IM gasket was leaking too. Didn't think those were the cause of this though.

It's an electrical boost gauge prosport.

 

[jimsgsx]

Check your line for a kink or tiny hole. Best i can come up with, or swap gauges and see if problem persists.

 

[RamenPride]

I've never dealt with electrical boost gauges, but I know that if an electrical oil pressure gauge sender has a bad ground it will give you wacky readings. I would check your wiring/connections and especially your grounds.

 

[TehRiceBandit]

Will do, thanks guys