While testing to set boost to 10psi it appears my VDO boost gauge reads 1 psi lower than the Profec. I would assume the Profec is more accurate, what say ye experts............... any feed back is welcome

Setting as of today 25F Boston

27% duty cycle
10% gain
95 set gain

 

boost gauge, because it (should be) reading directly from the manifold, while the boost controller is reading right at the turbos before IC/whatever causes pressure drop.

 

Kento

Both boost gauge and Profec are getting boost/vacuum
from the nipple off the intake manifold

Jack

 

Then I would err on the side of caution and go by the PRofec's reading....