Just wondering if its normal for the boost gauge needle to be really wobbly (fluctuating very very rapidly between -17 to -20psi) on idle when its pulling vacuum?

Does everyones do this or should it sit solid?
I'm thinking maybe there is a small air leak somewhere, but i've got a bailey breather venting to atmosphere with the metering head blocked off so I spose it can only be inlet manifold side of things...maybe?

Cheers!

 

pretty normal bud i would say

 

Mine does it as well, never worried me really.

 

Sweet, so long as its normal.
I just didnt remember it doing it before i fitted the Bailey system.
As soon as i increase the revs slightly or when i'm driving/boosting/coasting it's always solid, just on idle it fluctuates rapidly.

Cheers!

 

Mine does the same when idling

 

I'm glad its not just me! lol