SuperMID M1, MPG Computer

[GasSavers_Yoshi]

Originally Posted by krousdb

Not with it's current programming.

Sorry about that, but Dan is right.
It was programmed for Japanese Prius and I tried to be optimized, effective and fast results for km/L.
Please try to acknowledge/understand the international SI units standard.
Yoshi

[Matt Timion]

Originally Posted by Yoshi

Please try to acknowledge/understand the international SI units standard.
Yoshi

LOL. I'm a big fan of the metric system. Perhaps I can lobby the state government here to change all "Speed Limit" signs to have both MPH and KM/H on them.

[GasSavers_Yoshi]

Originally Posted by krousdb

Another interesting point is the % time the engine is running and FE while the engine is running(shown as 76% and 19.46 km/l). During the 6 mile test run, the injectors were only active for 76% of the trip time, either because the engine was off completely or the injectors were cutoff during closed throttle engine braking.
[snip]
Thanks Yoshi!

You're welcome!

One minor correction.
The % value is not % time but % distance.

So, your taget is 27% distance the engine running as same as the 1400 mile marathon, right?
Yoshi

[MetroMPG]

you'll get used to it, matt. i did - before i got the scangauge, i never used to "think" in mpg (US).

but after having learned my mpg (US) "targets", as dan pointed out, i stopped worrying about it.

to me it doesn't matter if the thing reports Kanseis per Farfegnugens as long as it's accurate and consistent. it's my "target" points and the relative differences between them that interest me most.

the only time i really like to have control of units is when running tests, when i select "km/gal (US)" output. nobody ever uses those units in real life, but it's where the SG offers the highest resolution for comparing readings. (i'm nit-picking, admittedly).

[krousdb]

Originally Posted by Yoshi

So, your taget is 27% distance the engine running as same as the 1400 mile marathon, right?
Yoshi

LOL! I think 27% distance NOT running would be a more realistic target. Today on the way to work I showed engine on 79% of distance and 27.5 km/L (64.5 MPG). ;-)

Perhaps a little calibration is in order. I was guessing 55 MPG on the way to work and 47 on the way home, 51 average. This would correlate well with the typcal prius commute.

[krousdb]

Originally Posted by MetroMPG

Kanseis per Farfegnugens

I tried googling that unit of measure and came up with nothing.;-) Are you sure about the spelling? What would be the conversion factor?

[Compaq888]

Originally Posted by Yoshi

It measures the pulse width of injector for the fuel usage.
If the vehicle goes to the fuel cut mode, the pulse width becomes zero.

Basically, the SuperMID M-1 works on any car which has fuel injectors and speed(distance) pulse output.

Do you know the pins for these signals from your ECU?

Yoshi

Yes I know them. I have a service manual from nissan, AEM EMS manual, and a hayne's manual. The question I asked was does anybody know if my car has the shutting off injection feature???

If this was sold for like a $100 I'd be all over it. Maybe we can do a group buy?

[MetroMPG]

Originally Posted by Compaq888

does anybody know if my car has the shutting off injection feature

your nissan service manual should say.

but i kind of suspect that this feature isn't included on cars with automatic transmissions. if your fuel supply were shut off, wouldn't your motor would stop running (unless your torque converter was locked)?

*maybe* there's enough pressure in the torque converter (unlocked) above a certain rpm to keep the motor turning. i'm not certain.

in a manual shift car, the momentum of the vehicle through the direct connection of the wheels, tranny, and motor keeps the motor spinning, even when the fuel is off. when the rpm drops low enough that the engine is about to fall below idle rpm, the injectors start supplying fuel again.

i could be wrong on the auto trans thing. just a guess.

[Compaq888]

Originally Posted by MetroMPG

your nissan service manual should say.

but i kind of suspect that this feature isn't included on cars with automatic transmissions. if your fuel supply were shut off, wouldn't your motor would stop running (unless your torque converter was locked)?

*maybe* there's enough pressure in the torque converter (unlocked) above a certain rpm to keep the motor turning. i'm not certain.

in a manual shift car, the momentum of the vehicle through the direct connection of the wheels, tranny, and motor keeps the motor spinning, even when the fuel is off. when the rpm drops low enough that the engine is about to fall below idle rpm, the injectors start supplying fuel again.

i could be wrong on the auto trans thing. just a guess.

I haven't seen anything like it in the manual. So I guess I don't have it. But still I'd get this thing but not the beta model. The production model would be cool. I consistently get 32-33mpg but I have to go through a couple of street lights to get to the gas station so I think my mpg is 35+mpg. With this unit I wouldn't have to do any driving tests and I could see what rpm is best for shifting and what speed is best for fuel economy.

Also would this mpg computer work with 0bd2??

[Matt Timion]

Originally Posted by Compaq888

Also would this mpg computer work with 0bd2??

Absolutely, but if you have obd2 I'd just get a scangauge. It's cheaper, in MPG, and you can order one right now.