Maft Pro Boost Pressure Reading

[jpeek29208]

Hey all,

Went out today and finally started to do some tuning with the Maft pro, which has been awesome so far. One thing I didn't understand was under my Boost pressure(psi) it read a vacuum of -9 at idle. Once under boost it reads exactly as my gauge does. After reviewing my logs the lowest vacuum i see is -12. Not that it matters, but does anyone have an idea why it read this?

thanks
josh

 

[drjonez]

again, what parameter are you looking at?

where is the MAP sensor located?

 

[jpeek29208]

i figured it out. its all good dr. j

 

[drjonez]

what was the issue?

 

[jpeek29208]

im a dumbass. Forgot my gauge reads in in. hg while in vacuum.

 

[drjonez]

most do.

even so, a normal hot idle should be somewhere around -20" of Hg

 

[jpeek29208]

yup thats were my gauge says im at. Maft Pro says I'm at -9psi. So im good to go, now i must tune it.