What does PRES mean on SAFC?

[Desi4Life]

Is this the mani pressure or vacuum pressure? Also, what range should that be in while I am driving? Mine stays VERY constant...

Thanks
Desi

 

[kpt4321]

A: There is no such thing as "vacuum pressure."

B: It *would be the presure within the manifold, which would also at times be a partial vacuum, just like you see on a vac/boost gauge.

C: It should stay constant, because it doesn't work. It requires a car with a speed-density baed fuel metering system, which the DSM's do not have.

...Kyle T.

 

[Desi4Life]

ahhh, thanks bro. So our cars having the Karman set-up would void this function??? I wish teh VFAQ would have said that, I wouldhave saved time on the install

Desi