Guys,

I've got an autometer 3301 boost gauge.

And as you can see by the attached photo when my car is off the boost gauge shows 1Hg Vacuum.

Has anyone adjust one of these gauges or knows how to then I'd greatly appreciate it.

I believe it could be the cause of my low boost readings on WOT runs.

Any help would be greatly appreciated.

Cheers
AntMan