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Originally Posted by pb and h
SHM(super highway mode) on the FIT using the
Findings:
LOD: 46
IGN: 36
MPH: 47
MPG: 55.4
LOD: 46
IGN: 33
MPH: 49
MPG: 57.0
WHEN USING CRUICE CONTROL:
LOD: 49
IGN: 34
MPH: 48
MPG: 53.1
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I have never seen 55 to 57 FE at 4xmph unless I had a tail wind.
Shawn, Most of the time the wind can play a huge roll in the test readings in addition to the draft from being in a pack of cars or not at all. Also road grade. even 1/4% grade is BIG. Not to rain on or discredit your results, but I'd be interested to see this with a test going in both directions on the same road with an keen eye on traffic and not using instant mpg reading. Doing it on the fly on the way to work is not too reliable IMHO
Also with the noisy nature of the instantaneous nature of the SG MPG to get decent results you need to use the SG trip, current, mpg and the reset button. I have current set up as a x-gauge on my junk. Just set up for the run, go to trip, current and use reset and it will start an avg of the test run. Try it and you'll see how it takes a nice avg. Take the readings as you have it shown then swap to trip to read avg FE for test using current
I tried to do SHM for a solid week and at the same speed never got close to 55mpg. In fact at any given speed held constant the LOD, IGN are 100% linked to the environment and rolling resistance. Temperature, winds, traffic and tire type and pressure are big variables.back off the gas and the LOD and MPH falls off, every single time if you did it from a steady state. When I'm less than 40mph then I just get 51mpg. 45mph is 48 on flat ground and some traffic and no wind 82F.
All that said, please make me out to be wrong and come back with some real testing data. I know mine can't do that, but if yours does maybe others can as well. I have always felt your '07 Fit was more capable by maybe 4 to 5mpg then my '08. But, you also know the +60mpg runs are very unique and only a few of us have managed to pull that results using a great deal of effort and patients.
Quote:
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So I have my SGII set to 10 gallon tank. I have calibrated it 3 times just to be sure that I had it right. Is there any way to calibrate tank size? Too bad the car doesn't send gas left to the SGII...
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set it to 10 or 11 (depending how far you like to take the tank before refuel) and leave it. I have mine at 11. It will not change the mpg you get unless you keep messing with it. The fill calibration if different and does not change the fuel tank capacity at all. The fill calibration makes a % change in the actual gas used compared to what SG read. Most are within 2% with 0% correction on the fuel side, unless you start using some advanced driving methods that include coasting with eng off leave it at 0%. I drive all out for FE and have a 13% correction to get her close to actual. One other comment, chasing the calibration on the fuel side based on fill up gals is a total wast unless you fill to the fill hole neck. A Fit's fill repeatability is very inconstant and greatly dependent on:
- the slope of the drive way at the pump,
- speed of fill,
- pump auto shut off calibration ,
- angle of the nozzle in the fill hole and the list goes on.
good luck