Quick check on Boost guage-

[2projects2many]

Alright folks, I finally hooked up a boost gauge today. My question is, when I'm under full boost, the needle is fluttering-is it supposed to do that, or be steady at 7psi. (Sr20det). It just hovers around 5-7- but won't stand still???
Modified by 2projects2many at 8:03 PM 9/19/2009

[2projects2many]

Anyone?

[OutToWinPAHC]

Perhaps it just accurate and your not used to seeing an accurate display with fluctuation?

[2projects2many]

So are you saying that it shouldn't be a smooth movement, and sit at the point it's measuring? I just wasn't sure if I was have a boost leak or something that wasn't allowing it to stay constant. It's hard to dial in your boost, if your gauge doesn't stay consistently on a number to know where you're at to begin with.

[ZOMG.SR20]

its the boost pressure its supposed to do that, it doesn't hold steady

[2projects2many]

Thanks for the help! I thought something was wrong. Have 5k miles on this swap, but just got around to installing the gauge, and didn't think that was normal. I see you have an 03 TB, I have an 04, it's been a good truck so far.

[Chris28]

My gauge holds steady. It should not fluctuate under boost. Either you have an intermittent boost leak or your gauge is messed up, more likely it's the gauge.

[justclay]

My gauge sort of vibrates at the top end of boost if I hold it there. As far as climbing to and holding certain levels of boost, it should be pretty steady, but at the very top, it wiggles a bit like a fast vibration. What gauge are you running? I've got Autometer.

[2projects2many]

I don't believe it's the gauge, 'cause I can put a vacumm/pressure gauge on it, and it will hold steady @ 10psi. Must be a fluctuation in boost? I will have to do a boost leak detection I guess.