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Oct. 3, 2011 5:04 p.m. 92CelicaHalfTrac SuperDork

Ok, so i think i've got it....

Lambda reading never change no matter what fuel you use.... but when you calibrate a display for different fuels, what spits out on the display is what changes.

Ergo, wideband always reads 1.0 Lambda as stoich. If the M300 TE was calibrated for pump gas, it would spit out 14.7

If it was calibrated for E85, it would spit out 9.7.

BUUUT, the argument for displaying lambda is that there's really never a conversion necessary, it'll always display 1.0 as stoich.

Yes? I think i broke through a huge mental block today.
Oct. 3, 2011 5:36 p.m. DILYSI Dave SuperDork

Bingo.
Oct. 3, 2011 6:30 p.m. alfadriver SuperDork

Based on your month an a half of thinking about it, at least we are pretty sure you are not jumping to conclusions....
Oct. 4, 2011 8:47 a.m. 92CelicaHalfTrac SuperDork

alfadriver wrote:

Based on your month an a half of thinking about it, at least we are pretty sure you are not jumping to conclusions....

HAH!!!

Eh, it just bugs me when i don't understand things, so it just keeps circling around my brain until it makes sense, off and on.

Why something this simple took so long, i have no idea.

At least i can file this away for future use. I think the LC-1 in the MX6 is still going strong. (I think, i need to somehow test if it's accurate.) Says i'm running @ 12.8:1 at cruising speeds, yet somehow, i'm still getting upper 20mpgs.
Oct. 4, 2011 9:27 a.m. pres589 Dork

If I may threadjack... let's say I wanted a simple little LCD display showing lambda or a calibrated a/f ratio, there are surface mount illuminated LCD displays for things like voltage, so I assume something could be done with one of those? I'd like to get a wideband setup for my motorcycle and don't want to cut holes in the dashboard and I'd like to be able to use the thing while riding so I can actually observe what is really going on with air/fuel ratios.

Does anyone know of such a kit, or could offer up ideas for a display? This seems perfect but I don't like the gauge depth issue with the included gauge;

http://www.diyautotune.com/catalog/innovate-standalone-gauge-kit-lc1-red-db-gauge-...
Oct. 4, 2011 9:39 a.m. 92CelicaHalfTrac SuperDork

This is what i use in the MX6.

http://www.innovatemotorsports.com/xcart/product.php?productid=16314&cat=0&...

It's pretty small, maybe a quarter inch thick?
Oct. 4, 2011 10:25 a.m. pres589 Dork

In reply to 92CelicaHalfTrac:

Snap, volt meter & a/f ratio display, nice. I wonder how weather resistant it is. Thoughts on trying to surface mount it? Do I care about other sensors beyond the LC-1?
Oct. 4, 2011 10:52 a.m. 92CelicaHalfTrac SuperDork

pres589 wrote:

In reply to 92CelicaHalfTrac:

Snap, volt meter & a/f ratio display, nice. I wonder how weather resistant it is. Thoughts on trying to surface mount it? Do I care about other sensors beyond the LC-1?

I flush-mounted mine in my sunroof control console... don't know how weather-proof it would be, but you could probably MAKE it weather proof pretty easily.

I guess i wouldn't care about any other sensors. They're cheap to replace.

I'm not a big fan of the LC-1 these days, personally, but it's not because of the sensor. The wiring job to install it and the relatively frequent calibration schedule doesn't seem like it should exist in the year 2011. There are many other choices that are far easier to install and don't require the calibration so often.

YMMV, of course.
Oct. 4, 2011 11:14 a.m. EvanB SuperDork

Is there really a reason to have an external display?

I am going to be using Megasquirt on my MSM swap so when tuning it I can see the WB output on the computer. Do I really need a physical gauge in the car to monitor it?
Oct. 4, 2011 11:15 a.m. 92CelicaHalfTrac SuperDork

EvanB wrote:

Is there really a reason to have an external display?

I am going to be using Megasquirt on my MSM swap so when tuning it I can see the WB output on the computer. Do I really need a physical gauge in the car to monitor it?

I only have mine for peace of mind. It's there so if i choose to glance up at it, i can. Handy if the car is running weird, i can look up there and potentially rule out one variable, or pinpoint it.

Short answer.... nah, don't need it.
Oct. 4, 2011 11:31 a.m. pres589 Dork

In reply to 92CelicaHalfTrac:

The display says it works with the LC-1, LM-1, and LM-2. Any thoughts on which of those would be "best"?

I imagine I could start by sealing the unit up, I really don't want to put the thing in an Otter Box or similar but that'd be a pretty sure bet on weather resistance. It would also make switching between voltage and a/f a hassle.
Oct. 4, 2011 11:49 a.m. fast_eddie_72 Dork

Clay wrote:

Anybody know anything about this new one from Innovate? Sure looks easier to wire up than the LC1.

I got one of these, just can't find time to install it. Sure hope it works out okay.
Oct. 4, 2011 11:55 a.m. 92CelicaHalfTrac SuperDork

pres589 wrote:

In reply to 92CelicaHalfTrac:

The display says it works with the LC-1, LM-1, and LM-2. Any thoughts on which of those would be "best"?

I imagine I could start by sealing the unit up, I really don't want to put the thing in an Otter Box or similar but that'd be a pretty sure bet on weather resistance. It would also make switching between voltage and a/f a hassle.

Unless i miss my guess, they all use somewhat generic Bosch sensors. The LC-1 would be more than sufficient for what you're doing.
Oct. 4, 2011 12:03 p.m. fast_eddie_72 Dork

LC-1 is supposed to be weatherpoof. Dunno. That's what they say. The bezzle does have a rubber o-ring, so some effort has been made to keep water out.
Oct. 4, 2011 12:04 p.m. 92CelicaHalfTrac SuperDork

The LC-1, yes.... the AutoTimer display, doesn't look like the same provisions have been made.
Oct. 4, 2011 12:25 p.m. fast_eddie_72 Dork

In reply to 92CelicaHalfTrac:

After I posted that I wondered if I'd gotten confused again...

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