vacuum/boost gauge or boost gauge?

[gnturbo]

is there any benefit to having a vacuum/boost gauge over just a 30psi boost gauge?the vacuum is from 30psi to 25 psi boost,have a choice of either one,which one gives the best info?is vacuum something to watch?

 

[TurboRegal84]

I have always had a Vac/Boost gauge. The Vac. reading is a good way to make sure your car is running consistant, and that you have no leaks in the intake.


Auto Meter makes a nice 30-0-30 Unit that provides great readings. The gauge requires no extra hookup other then running the boost line.

IMO: Get the vac/boost gauge.

 

[Tom87GN]

I second Herb. Get the vacuum/boost gauge and never look back. It's also good to know when you are getting close to the boost sometimes too, not just when you're into it already.

 

[salvageV6]

Just put a new Autometer 4303 Ultralight in salvageV6 today.

30-0-30 gauge. Very nice.

Within 1 pound accuracy across the board with my calibrated very expensive gauge. Replaced my VDO one that was 1.5lbs. off and non-linear in response.

Putting that one on the GN to see vacuum it only has a boost gauge now.

Vacuum is good to have for tuning.

 

[99Formula]

My car originally had a 2-1/16" vac/boost gauge, but found it could be a little hard to read when things started getting a little hectic in the car. I ended up replacing it with a 2-5/8" boost gauge instead. I'm going to put a vac gauge under the radio along with a tranny temp gauge.

Peter