Boost/Vacuum gauge install

[Protege5 iCE]

i got a Defi boost/vac gauge from my buddy and i was wondering where to tap into for the feed. the car is currently N/A (hopefully soon to change ). pics would help if you have them. TIA

 

[Matthew1785]

what's the point of installing it... better off waiting

 

[Protege5 iCE]

the vac part would still work wont it? the gauge itself is already in my A-pillar, cuz it was better then an open hole. wouldnt mind seeing just a little bit of movment out of it

 

[qualityrockola]

what's the point of installing it... better off waiting

A friend of mine had a '66 barracuda back in highschool. It did not have a tach, but instead had a "power meter" it was just a fancy vacuum gauge with markings on it like "economy", "power", "idle", i dont remember exactly what else. Anyway, you can use a vacuum gauge as a kind of efficiency gauge, vacuum drops as load and throttle position changes. Not especially useful, but not useless either. Another friend of mine was able to determine that in his WRX it was more efficient to run the AC than to have the windows down using his boost gauge.