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Old 12-31-2008, 06:34 PM   #1
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Default Please take a look at a newb's EGO settings

Just installed my lc1 today and just had a few questions about the ego settings. According to Brain in the "help an idiot convert to wideband" I think these are the correct settings for me. If you guys could just take a glance and give me some feedback I would appreciate the input. Does anyone know why the Ignition Events per Step are set at 72 on the pnp settings? I'm totally new at this and also not sure how to correctly set up my ve tables now, what is next? Do I need to set up the afr target 8x8 table using my lc1 and autotune? Thanks all

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Old 12-31-2008, 07:13 PM   #2
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The ignition events are 72 because of some extremely complicated reason that you can read about in the mega manual. I tried to understand it but then just said **** it and stayed with 72.

The switch point should be 2.37v I believe.

The rest is fine.
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Old 12-31-2008, 07:21 PM   #3
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? Ok, thanks sam, maybe someone else can shed some light on it further. It seems that some people change the Ignition events per step and some don't. Hopefully someone else will chime in.
I am probably wrong, but when looking at my lc1's outputs in innovate's software, it looks like it is reading 2.45v at 14.7afr? How did you come up with 2.37, if you don't mind me asking?
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Old 12-31-2008, 07:29 PM   #4
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4.7/10 = 47% of the way between 10 and 20

47% of the way between 0v and 5v is 2.35 volts. Mine is set at 2.352 for some reason. My per step is at 72 as well.
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Old 12-31-2008, 07:35 PM   #5
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Thanks Sav, that would be correct except for the fact that my lc1 is set up for 0v for 7.35afr and 5v for 22.39. I've read diy's older tips that say to set it up like you have mentioned, but just reading on their website, they recomend not doing it like that anymore...
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Old 12-31-2008, 07:38 PM   #6
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Quote:
Originally Posted by flipt86 View Post
Thanks Sav, that would be correct except for the fact that my lc1 is set up for 0v for 7.35afr and 5v for 22.39. I've read diy's older tips that say to set it up like you have mentioned, but just reading on their website, they recomend not doing it like that anymore...
Its setup like that for the Gauge.

If you plugged it into the MS its supposed to be 0-5v/10-20afr
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Old 12-31-2008, 07:47 PM   #7
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I'm lost, take a look at this from diyautotunes site:

For a long time we guided customers on how to re-program their LC-1 / LM-1 / LM-2 to output a slightly different signal from default. The goal of this was to increase the resolution of the signal in the range of AFR most users will spend their time in. What we had recommended was to program the output you were using to send a signal that represented a 10-20:1 AFR from 0-5v. While in theory this is great and does increase resolution a bit, in practice it's not really needed and is probably more trouble than it's worth for most users. The benefit of this is almost immeasurable, so going forward we recommend leaving the analog outputs on your LC-1 / LM-1 / LM-2 at their default settings. Then to configure your MegaSquirt to talk to your LC-1 / LM-1 / LM-2 do the following:
First in the MegaTune Configurator you need to select Innovate Default.
Then in the MegaTune EGO settings select 'wideband sensor'. Later you can come back and use the MegaManual to tune the rest of the settings on this page.
Lastly (and only for MS-II users, MS-I can skip this) you’ll want to go to TOOLS>Calibrate AFR Table and choose the Innovate Default setting and click OK, this will calibrate your MS2 to read the LC-1 / LM-1 / LM-2 properly.
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Old 12-31-2008, 07:54 PM   #8
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Ill tell you why they did that, It saves time having to write additional instructions on how to reprogram the LC1 to send the other signal.
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Old 03-07-2009, 02:18 AM   #9
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Going to bump this. Can someone please tell me what settings i should put for EGO switch point( should it be 2.35?), Ignition Events per Step (72?), and the rest of them.

Thanks, T
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Old 03-07-2009, 09:26 AM   #10
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You have a wideband, and are presumably using the AFR Target tables. Hence, the switchpoint is irrelevant. It's for cars with NBO2 sensors.

Ignition Events is a delay factor. Every time the MS makes a fuel correction based on EGO, it then waits the specified number of ignition events for the mixture to stabilize before it takes another reading and makes another change. So smaller numbers means the MS makes faster changes, bigger numbers slows it down.

In the beginning, when first tuning a new map, use a smallish number here. 24 is fine. You want the MS to be able to quickly make fuel corrections, because your VE table is presumably for ****.

Once you gone through a couple of MLV sessions and the VE table is starting to get dialed in, start slowing down the EGO system. Put a 40 in the Ignition Events, do some more logging and analyzing. Rinse, repeat. Work your way to to about 80 or so, which is where I leave 'em once VE tuning is done and I just want to run closed-loop.
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Old 03-07-2009, 11:41 AM   #11
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Sounds good. Is autotune option in Megatune good at all? Not to use instead of a dyno but to just get VE tabs to be a bit safer.
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Old 03-07-2009, 12:15 PM   #12
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I personally don't like the MS's AutoTune function, though I ave to admit I haven't put a whole lot of effort into figuring it out. When starting fresh, I set EGO to a large step size (3), a broad authority (30%) and a fast cycle time (20 or so events per step) and then do a short drive while logging at low speed and low RPM. Plug the result into MLV on "Easy" ad watch what it does. If it's making big corrections, mirror those corrections (by hand) into the cells you hadn't gotten into yet.

Turn down step size to 2 and cycles to 30, and repeat a couple of times. Start using more RPM and more MAP each time.

Then turn down step size to 1, cycles to 40, and repeat again. Now's the

Keep slowing down cycles, and start moving MLV to "Normal" and then "Hard" as you progress. You'll eventually get to where you've got cycles at 80, and it's only stepping back and forth by 2 or 3 points when you're in steady cruise at any given load. That's when you know you've got it. Reduce authority to 5 or 10%, switch MLV to "Very Hard" and enjoy.
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Old 03-07-2009, 12:33 PM   #13
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Sorry for my noobness what is MLV? Is it the megalogger? Another quick question i got is about wiring the power and ignition for LC-1 controller and the gauge. I always have a problem finding a good place to wire them. At the moment i have the LC-1 wired to the blue connector for when you use a timing light. I bet its a pretty bad idea but that was really the only place that i tested and got constant 12v when ignition is on.

I am not really good at wiring i am always nervous to cut something that i shouldn't have.

Thanks again.
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Old 03-07-2009, 04:13 PM   #14
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MLV = MegaLogViewer, a program that you use to view the .XLS-formatted logs generated by MegaTune (MT).

VEA = Volumetric Efficiency Analyzer, a function of MLV which auto-tunes your Volumetric Efficiency (VE) table based upon your logs and the relevant MSQ (the file saved by MT that contains all maps and settings.)


Where you take the power from to drive the LC-1 is not terribly critical, although some folks have had problems with the LC-1 when driving it from a source that's hot during cranking. Mine is wired so it's hot in Run and off in Start.

Grounding of the LC-1 is extremely critical. You want to ground it to the same point as the ECU, as close as possible to the ECU, to avoid any offset in the readings. This also needs to be a nice, solid ground to the head, to minimize noise and voltage drop across it.
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Old 03-07-2009, 04:53 PM   #15
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great. I did wire all the grounds to the same place on the head right next to where the CAS is. I am more lost in looking for a hot posits 12 volt near the radio. I was thinking just wiring it right into the radio harness.
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