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Driving with a vacuum guage for fuel efficiency

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Uploaded by on Mar 27, 2008

Just a quick explanation of how I use a vacuum guage to monitor my engines load to get better fuel economy..

Want to learn about other techniques to get the most out of your fuels mileage? Check out EcoModder.com!

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Uploader Comments (DdgeShelby)

  • its a 2002 toyota tacoma.. Aluminum flywheel, oem fitment hd clutch, flexalite electric puller fans, atek monoblock competition wheels (14.9lbs each) lowered 3" front, 4" rear, doug thorley catback exhaust (it killed about a mpg) stock exhaust is where you want to be on a n/a engine, backpressure helps the bottom end tork and if your lookin to get some mpg's, low end is what you want so you keep your rpm's down. No bump stick engine here, just overhead cams :)

  • alua

  • What are you driving in, a Tacoma?

  • @ProjectCarTV

    2002 Toyota Tacoma manual 5 speed 2.4 (2RZ) engine..

  • A boost gauge in a force induction engine will give you the same data. Less boost or more vacuum= better fuel economy. A stable foot also is a huge variable. So cruise control is a must for ideal fuel economy. And draft trucks whenever possible :)

  • @QuattroStig

    Yup, keep your foot out of the boost and you'll be pulling some decent numbers..

    I'll have a T3/T4 Air Reasearch snail keeping the engine company within 2 months time..

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  • This is what i'm putting in my truck, also to help during towing

  • My buddy has a 66 cuda that comes with an economy gauge which i think is the same thing. Cool video!

  • There is NOT more energy by volume in higher octane fuel. Octane rating is nothing more the fuel's resistance to ignite. Running fuel rated higher than your vehicle recommends not only hurts your wallet, but can even hurt your mileage in some cases.

  • I would imagine you have electric cooling fans? Another thing to think about might be a really hot ignition (knowledgy) and "Splitfire" type multi-diode or iridium plugs.

  • Other considerations would be high octane gas. It costs more because there is more energy in the same given volume.

    I guess it really comes down to tuning your specific vehicle in a maintenance sense.

    There is a new movement of people and I think they are called "Hyper Milers". They resort to whimsical tear drop body modifications to the rear portions of their vehicles. They drive barefoot and resort to a host of different methods for wringing mileage out of every drop of gas.

  • If you really want to increase your mileage, figure out a way to decrease your rotating mass. Lightweight wheels and tires will go a long way.

    Proper pressures

    Lightweight synthetic motor oil (Royal Purple, Mobil one, Red line gear oil)

    Under drive pulleys?

    High flow, low restriction exhaust with an x pipe and a K&N air filter

    Roller rockers

    You see where I'm going. Many of the things that make your vehicle go fast, do so by making it more efficient.

    I'm guessing this is a GMC truck?

  • I'm an ex rig driver with about a million miles. I was an owner operator for a time and as you might imagine, I have seen it all.

    Yeah, nothing wrong with the peripheral view. That's where my boost gauge was in my '94 RX-7 R2.

    I had a buddy who constructed and attached a hydrogen generator to his 7.2 liter Ford Diesel. He said it didn't work.

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