Moddiction if you're at -10" you might need to investigate.

 

Hmm I've been like that for years. Make correct boost as well.

Did a boost leak test and only found one tiny spot that leaked at higher pressure only.

 

Mine is the same way Moddiction. I read from the AEM ems reading too not a boost gauge.

 

Ok good to know I'm not only one.

I have all emissions stuff removed and air pump. Maybe that makes a difference?

I'm reading from serial gauge.

 

Im running at -10.8 and Im pretty much running stock other than fuel set up and stand-alone atm.

 

 

There is a difference between psi and inHG. An accurate vacuum gauge is not something most have. Boost gauges tend to have have 2 scales, psi for positive pressure and inHG for negative pressure. Any multi cylinder engine should be steady at 18-20inHg at idle, sometimes slightly higher. Increased cam overlap or altitude above sea level will reduce.

My old 71 340 Small block Chrysler with a 284deg duration cam idled around 12-14 inHG.

 

Well I clearly went full retard when replying to that lmao

 

Must be why. Aem serial gauge I guess just shows -psi for vacuum.

 

my aem boost gauge reads 20-23