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Thread: Manual transmission, shifting!

  1. #31
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    1-3-5

    Maybe it's because I'm an old fogie. I shift 1-3-5, and cruise at 60kmh(in the city). I found that's saves the most gas. I did an experiment, one tank fast acceleration to legal speed limit, lots of passing on the highway etc. Then one tank with 1-3-5(no bogging), and steady cruising on the highway. I got about 30% better fuel economy. I still open her open once in a while, I'm not that old

  2. #32
    Jack of all asses Wagonbacker9's Avatar

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    passing usually involves a lot accelerating and decelerating.. thats exactly what I would expect. I skip gears sometimes getting onto freeways, but its usually because I had fun winding one gear out and don't need to accelerate anymore. lol

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  3. #33
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    Quote Originally Posted by Wagonbacker9 View Post
    passing usually involves a lot accelerating and decelerating.. thats exactly what I would expect. I skip gears sometimes getting onto freeways, but its usually because I had fun winding one gear out and don't need to accelerate anymore. lol
    1-2-5 FTW

  4. #34
    The one and only magnumP5's Avatar

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    My 1-2 shift is usually between 3500-4000 RPM and all others are 3000-3500 RPM for regular driving. Also, I will never cruise along in this car below 2500 RPM unless I have to (second gear in a parking lot, for example). I truly believe these cars are most efficient between 2500-3000 RPM so puttering around below or staying up high aren't helping you at all. If you're cruising too low you will either have to mash the gas more or downshift to accelerate - both burning more fuel. Also, if you're zooming down the road at 5000 RPM you're just burning off fuel. Remember, above a certain RPM the ECU automatically throws the car in open loop despite engine load and will start dumping fuel. I've said this many times before but I really wish I had an engine map for the FSDE - they're so easy to find for just about any diesel engine so why not gasoline? FWIW, mpg is not a true measure of an engine's efficiency - what you would need to do would measure the fuel consumption mass per unit time per unit power (specific fuel consumption). In the aviation industry we measure engine efficiency in lb fuel (mass) per hour (time) per lb thrust (force).

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  5. #35
    Jack of all asses Wagonbacker9's Avatar

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    thats basically fuel consumption/hp.... thats literal efficiency. Most people don't care so much about that because MPG is the number you can translate to what comes out of your pocket...
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  6. #36
    The one and only magnumP5's Avatar

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    Quote Originally Posted by Wagonbacker9 View Post
    thats basically fuel consumption/hp.... thats literal efficiency. Most people don't care so much about that because MPG is the number you can translate to what comes out of your pocket...
    It is, but I just get sick of people going on about how efficient some car's engine is just because it gets good fuel economy. Show me a car that can do 40 mpg while making 300 hp and I'll be impressed...
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  7. #37
    Jack of all asses Wagonbacker9's Avatar

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    well, a turbo is basically designed to assist in just that... its power on demand... fuel efficiency when you want that, and the ability to make big power when you want that instead. The real limit is engineering, and the simple fact that burning of fossil fuels isn't very efficient to begin with...
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  8. #38
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    Quote Originally Posted by br289165 View Post
    Snatch gears?
    Shifting without the clutch

  9. #39
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    i find myself granny shifting on a regul4r b4s15.

  10. #40
    Jack of all asses Wagonbacker9's Avatar

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    Quote Originally Posted by BlackCherry View Post
    Shifting without the clutch
    I would think it'd be a lil rough on the syncros... but I know a tow truck driver that had like 250K+ on his rig, and he did it.
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  11. #41
    low pro Sliver5's Avatar

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    pedal to the metal all the time.









    even when I'm hitting the brakes.

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