So I had my car for a while and when I first installed my blitz dtt with boost gauge I remember it reading -.60 Bar ( I guess) at warm idle. Well the car was in a accident and they replaced heads and valves and not it reads at warm -.67 or even -.70 at idle. The peak boost seems to be fine. what do you guys think the problem is. I checked the lines but they all seemed fine

 

If the needle is steady and you guage is accurate and the numbers are were you say they are your manifold gaskets might be leaking or you may have a broken or damaged vaccum hose.

I would take it in to have it checked.

I just checked the tech docs and .60 bar is where the needle should be.