Vacuum gauge

[cty0691]

I have just installed vacuum gauge on AE111 and when I accelerate, the needle goes to 0.
I thought if I accelerate, engine sucks more air so the needle goes up.
How does this vacuum gauge work?

[Shotgun]

0 = atmospheric pressure = throttle open = no restriction

vacuum = negative pressure = throttle partially closed/open = restriction

The needle will only go as far as 0 (atmospheric) in an NA car. If you got forced induction then you'll get boost past 0.

[strap-on]

yeah iw as like that too, it didnt do waht i thought it was gonna do, its pretty useless really, good for tuning carbied engines i hear

[Shotgun]

It's great for economy.

[strap-on]

yeah except i think i need to lose weight as my car is usually only just below 0 whilst cruising

[AceSniper]

think its got sumthen todo with the vacuume of the 20v quads as it hits 0 alot quicker than id expect just a tap of the foot and it nails the stopper pin.