Vacuum at idle?

GhostMercury

Member
:
MazdaSpeed 3 08.5
What is everyone getting for vacuum at idle? I'm getting just a little bit before the 20 mark on my defi gauge. This seems a little low to me, is everyone else getting the same reading?
 
What is everyone getting for vacuum at idle? I'm getting just a little bit before the 20 mark on my defi gauge. This seems a little low to me, is everyone else getting the same reading?

I didn't go check, but memory tells me that sounds like about what I get.
 
I am at sea level, my vac at idle is -21 sometimes will dip to -20 for a sec then goes right back. I have seen as high as -22 at idle. this is all when the car is at operating temp as well its different upon startup
 

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