Heya fellas

so i installed my boost gauge last week, and reinstalled it last night since i didnt have long enough vacume hose, and it was thin walled so it was easilly crimped, got some new stuff, way more rugged

but im seeing 10-11 psi when i pull, havent put my foot to the floor above 3.5k rpm yet, hasnt been that long, but i figured i should still see around 15 psi even at low rpm

it isnt a stock pulley, but i have no confirmation of what pulley it is, was there an aftermarket 12% or stock? unless i have a boost leak somewhere

i am reading around -15 at idle, and ussually around -23 to -25 coasting in neutral, so this seems normal to me

the thing that gets me is when the car is off its at 0, but if i freshly turn it off it takes about 30 sec to go from 10 vacuum to 0, is that normal?

also my ultra gauge says 15-16 psi where the analog is 10 and the vacuum is ussually 5-8 higher on the ultraguage than the analog

im just confused!

 

the only time I see 15 is WOT approaching redline

im not sure about the gauges showing differently but your saying 5 higher our cars stock even with pulley will not reach 20.

did you hook up off the fuel pressure off the port of the supercharger?