DIY: Fuel Economy Gauge for your car (to lower your car's fuel consumption)

**ghosthunter** · November 9th, 2010 07:28 PM

Originally Posted by torogi kid

ok ito a, how does this work?

It's basically a vacuum gauge. The higher the manifold vacuum pressure, the better fuel economy you get. At zero pressure, it pretty much means your throttle is open 100% or near that.

The gauge works pretty much as a feedback system to the driver. It would tell the driver if what he is doing will give good or bad fuel mileage.

where will you install the gauge?

The gauge can be installed anywhere on your dashboard, best in plain view. You will need to have a hose attached from the gauge to your car's intake manifold. You would need to find an unused vacuum "port" or use a T-fitting to splice into an existing vacuum line.

will it tell instantly that the driver has a heavy foot, or after a period of time?

The gauge will immediately tell the driver if what he is doing will result in good or bad fuel mileage.

**kinyo** · November 9th, 2010 08:13 PM

naturally, it would confirm the #1 fuel economy tip ... a light foot on the pedal

**ghosthunter** · November 9th, 2010 08:42 PM

Originally Posted by kinyo

naturally, it would confirm the #1 fuel economy tip ... a light foot on the pedal

True... but at least now you would be a visual aid to know how "light" is light enough.

**vinj** · November 9th, 2010 08:50 PM

Originally Posted by ghosthunter

True... but at least now you would be a visual aid to know how "light" is light enough.

True, and from my experience using the car with the VDO gauge with m/t tranny (back then it was a Space Wagon m/t and Corolla AE92 m/t), its not just about a light foot but it shows you what gear to keep it in, as we tend to try to upshift at the earliest time possible if we're on eco mode, and when is the best time to shift in various road and load conditions.

GH, you planning to install one in your ride? I actually wanted to buy that VDO gauge up for sale before.

**ghosthunter** · November 9th, 2010 09:04 PM

Originally Posted by vinj

GH, you planning to install one in your ride? I actually wanted to buy that VDO gauge up for sale before.

I already have a vacuum gauge installed in my corolla. I had it since the end of my acetone tests and before I had my Auto-LPG kit installed. So its been many years na.

I just started this thread just to "spread the knowledge".

**zner2525** · November 9th, 2010 09:19 PM

wala po bang vid or instructions with pics kung paano iinstall? it would help the beginners for sure.. like me..

**alwayz_yummy** · November 9th, 2010 09:49 PM

mas magbebenifit ata dito ung mga MT users.. us AT users unless modern AT/CVT na, di ata magiging accurate ang results

**ghosthunter** · November 9th, 2010 10:09 PM

Originally Posted by zner2525

wala po bang vid or instructions with pics kung paano iinstall? it would help the beginners for sure.. like me..

How to install a vacuum gauge:

http://www.ehow.com/how_5809395_inst...uum-gauge.html

http://ecomodder.com/forum/showthrea...tall-6303.html

http://gassaverguide.info/how-to-ins...-vacuum-gauge/

YOUTUBE: How to drive with a vacuum gauge

[ame="http://www.youtube.com/watch?v=0LY1i2VR2yg&"]YouTube - How to drive with vacuum gauge[/ame]

[ame="http://www.youtube.com/watch?v=MBYVZLRyQjk&"]YouTube - Driving with a vacuum guage for fuel efficiency[/ame]

**kinyo** · November 9th, 2010 10:04 PM

Originally Posted by ghosthunter

True... but at least now you would be a visual aid to know how "light" is light enough.

i agree ... in my experience, after using it for a few years, i developed that light foot habit, got the feel of how the car behaves, and eventually doing good fuel economy without having to look at the gauge

yup, its a good tool to help one develop a good habit ... and it applies on MT or AT, sir a_y

one can only wish, with all the electronic wizardry installed on cars these days, that every car have this fancy digital km/li readout to help drivers conserve fuel (as some have already done)