I have my ssafc on my intake manifold and it was telling me I was at like -9 at idle but my boost gauge tells me im at -20 and back when I had my boost gauge on my manifold it never told me I had negative boost till I moved it to my block. since I have a block should I not put anying on my intake manifold just move it all to the block like my boost gauge, ssafc, wastegate, and others all on my block?
not getting negitive boost from intake manifold
- Thread starter willey97
- Start date
- :
- Completely Stock P5
What was your boost gauge attached to before? Does it even show vacuum or is it a straight boost only gauge?
hornsfan10609
Certified Mazda Tech
- :
- 2003.5 Mazdaspeed Protege x2
It's possible the AFC reads in PSI not InHg. Either way you have a vacuum leak, it should pull 22-24inHg with a healthy motor. Ideally you want everything on the vacuum block but it should have the same readings as the IM.
