[viney266]

Well, it depends on where you pull your reading from, remember that.

But when I tuned I used a 5" industrial boost gauge wrapped in foam tape, used to just tap it in and place it on the dash of the car I was tuning. I knew it was a good trustworthy gauge..

 

[Onyx flash]

I'm using a VDO 15psi gauge it measured around 9 psi