i followed the whole guide for applying the 2 bar sd enhancement on my car, then i found the 2 bar map in the vcm scanner pid
engine/ air flow/ map sensor 2 bar
at idle i am getting 56.4 kpa and that converts to 8 psi ?
but my gauge is showing my vacuum at idle -4.5 or something like that
also none of my histograms work and i have the old SAE map sensor deleted from the table display
can somebody please tell me what i am doing wrong ?