Hi I have a cansf ECU and I want to monitor manifold pressure or map in inches of mercury . not psi or kpa that scangauge provide. Can someone help me? I'm not asking for vacuum but for manifold pressure! Thanks. OK I think I got it. When using this I get 0 vacuum. 01bb000ff4b2 Changing f4b2 to 0000 I get 28.9 map. Is this correct?