OP are you running a fmic or the comptech aftercooler?

 

comptech aftercooler

 

Tightened my belt and moved my boost line to another location. Same problem...

 

Are you driving it to check boost or just revving it up?

 

I wonder if the boost gauge is calibrated to sea level like a MAP sensor? I live in Colorado with an elevation of around 5000' with a density altitude ranging from 6500-8000', my aem serial gauge reads off the MAP sensor and they are calibrated to sea level. I had a 4" pulley on my Novi 1000 and it was a 7 PSI pulley. my tuner checked my boost with a mechanical gauge and it read correctly. Although on my MAP sensor it only shows 4-4.5 PSI. So really to overcome atmospheric pressure at sea level, I'm already at a 3 or so PSI loss. The AEM tru boost gauge has a 29 PSI pressure sensor in it, it may be calibrated to true zero atmospheric pressure and that may be why you are experienceing difficulties with it reading correctly.

 

Both

 

You must drive it or put it on the dyno. Revving it up doesn't allow the boost to build fully and it will always read lower.

 

It's not reading any more than 2psi on the road

 

tightened the shit out of my belt this morning using a pry bar and a breaker bar on the ratchet. And now she seems to be working as it should. Now i'm starting to gain boost at 4500-5000 rpm and the way up, still only maxing out at around 4psi though so i'm going to buy a new belt, i suspect that's the culprit

 

New belts stretch over the first 100 miles so you will need to re-tighten. Don't tighten enough to take out the bearings.