Erratic boost pressure

[Skyhigh4by]

When I first got my gauges in I was running the PPE 120 tune and the most boost I would see was 26 PSI.....It has been like this for the last 1000KMs or so but now all of a sudden sometimes it will jump all the way up to 31 PSI but also jump around alot when its up there. Whats weird to me is that it just started doing this. Could there be something wrong with the gauge or what?

 

[LarryJewell]

The gauge or connections would be a good place to start looking

 

[dmax lb7]

Not real familiar with the LLY, but you may want to look at the vain position on the turbo. The fact that you are making MORE boost than you were before, I don't think there is a leak or a problem with your connections or your gauge. It is the cheaper place to start looking for problems though.

 

[McRat]

Did you change anything else? Blocker, revised tune, etc.