I got the autometer phantom boost gauge, and it idle it bobs up and down. Its begining to make me think, is it normal, did i f up on hooking it up, or is it a bad gauge. I got an autometer boost in my other car and it hold steady vacumn. Anyone else have something like this? im beginning to think how accurate it is.

 

check for leaks

 

check for kinks in the line.

 

If you have problems with their gauge, you can always call them. Their customer service has been top notch for me. Hell, they even sent me parts for free!