You can check my sig for mods. I ususally run about 14 pounds when I am racing at the track with 100 octane. As I was driving I had a coupler on my ic blow off and was only makeing 7psi. I fixed that problem now about a month later I am only able to make 10psi now. I checked that coupler and others and they seemed fine.

Also i noticed that my boost gauge doesnt stay at 16 in vaccuum. Its more jumpy now. like 14-18 up and down. I am thinking I should just wait till I get my new ic which will be very soon (I havent been driving the car till I can fix it). Hoping that its a craked pipe or something like that.

Tell me what you think. I also might just need to do a vaccuum hose job. Not looking forward to that...

 

If the vaccum is bumping around more than likely it's a vaccum leak. Check your hoses maybe get silicone hoses. Check your TB and UIM gasket too for cracks.

 

sounds like a vacuum leak.