Yesterday my boost gauge took a crap on me, I have had my boost gauge for 6+ months with no issues. I turn the gauge on and it does its open ceremony as it should but once it goes to read it just hangs at almost -30 under idle and normally its above -20 also while driving the gauge never moves, even under boost. I checked the vacuum line and it's prefect without any leaks or kinks. I need to find out if its fix-able or would I need to contact prosport and send the gauge back. Thanks

 

its likely the sending unit if anything, contact prosport and glenn should take care of you...

 

Thank You!

 

little update, I turned on the gauge without starting the car.... the gauge reads same as if the engine was on. (close to -25) I thought it should read 0 with engine off but I am not for sure.

 

it should read 0 with the engine off. Need the engine to be on to get vacuum.

 

Mine just went out on me a few weeks ago. I replaced it with a Greddy gauge. It was off by about 4lbs.