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Old 08-10-2007, 04:56 PM   #1
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Default Megasquirt Datalog: Take a Look.

Info:

1994 Miata base, no a/c, no p/s, stock engine wise besides a ricer filter on a DIY intake.

JAW DIY Wideband with bosch sensor and display.

Custom board based on the V2.2 PCB with a Megasquirt-I processor running ms&s-e 0.29v

Running DIYautotunes .msq just edited for my dwell and spark invert settings.

GM AIT, stock mazda CLT sensor, has NOT been easythermed.

The problems:

Cold starts are still an issue, rpm is too low, car wants to die moving at first.

Car goes PIG rich sometimes on letting off the gas, sometimes when idling. Map was just loaded now, quick drive, and posting the .msq and logfile.

The Wideband takes a few min to start reading, so ignore the perfect 14.7 afr at the beginning.

The good:

At WOT the car "feels" faster, and I am pretty sure it is.

Once it is warmed up idles GREAT, compared to before with my hacked maps.





Any info on what to change would be appreciated.

Was planning on going to the strip tommorow, would like to, but unless I can fix these issues, I am unsure of going.

Thanks in advance.


It seems I can't post attachments for some reason,

Quick free file hosting found on google:

The log:
http://www.filefactory.com/file/d1adaf/

The MSQ:
http://www.filefactory.com/file/5fbaa5/
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Old 08-10-2007, 06:29 PM   #2
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to fix the overly rich on lift condition I think you need to change your over-run settings. that's what determines how long after releasing the throttle it continues delivering fuel before cutting it back down. could be wrong here as my car is currently not tuned, still waiting on a WB cause I'm a cheap ****.
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Old 08-10-2007, 06:32 PM   #3
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Quote:
stock mazda CLT sensor, has NOT been easythermed.
If the MS doesn't think the CLT is up to temp will it not run really rich? If you haven't run easytherm doesn't that mean there has been no conversion setup to translate the stock CLT sensor?

Just a thought.
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Old 08-10-2007, 06:34 PM   #4
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I can't seem to figure out how to get easytherm to work with the version of ms&s-e, I should, but for some reason unable to.
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Old 08-10-2007, 07:01 PM   #5
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95% of us are using .29v....

you need to reflash that bitch....
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Old 08-10-2007, 07:03 PM   #6
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Quote:
Originally Posted by Braineack View Post
95% of us are using .29v....

you need to reflash that bitch....
As am I, as I posted above.

Not sure what I am doing wrong with easytherm.
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Old 08-10-2007, 07:03 PM   #7
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Quote:
Originally Posted by reddroptop View Post
Info:


Custom board based on the V2.2 PCB with a Megasquirt-I processor running ms&s-e 0.29v
I think he's right there with us.

Check out this thread.
https://www.miataturbo.net/forums/sh...ad.php?t=10181
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Old 08-10-2007, 07:06 PM   #8
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try creating the .s19 file with easytherm and reflashing with the MSII downloader.

or I can send the proper .s19 file to flash and the .inc files you need on the CPU.
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Old 08-10-2007, 07:16 PM   #9
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Quote:
Originally Posted by Braineack View Post
try creating the .s19 file with easytherm and reflashing with the MSII downloader.

or I can send the proper .s19 file to flash and the .inc files you need on the CPU.
Thanks for the offer Braineack, All I need to know is if I am supposed to use the V3 defaults, or some other start address for the code. After I know that it should be pretty simple.

I created the .s19 file with easytherm, using the #'s that I needed. I assume the RX7 defaults are the same as the miata ones.
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Old 08-10-2007, 07:37 PM   #10
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for the hardstart on cold check for Vaccuum leaks and then try jacking up your afterstart enrichments say 4-5% if this does not help then adjust your AIC, with the removal of the AFM, or in your case maf the flow reaching the TB might be abit more than it is used to and you could be leaing your self out, by reseting the AIC etc you can compensate for this. As the AIC is mostly effective on cold start as a sort of choke and when the AC is running the car will idle etc pretty well when it is hot, vs cold. I hope this helps
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Old 08-10-2007, 09:21 PM   #11
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Ok, what am I doing wrong?

1. Reflash .29v firmware
2. Load megatune, reflash msq.
3. Open easytherm.
4. Change #'s in easytherm
5. Code version custom
6. hit write .s19 and .inc files
7. select msns-extra.s19
8. hit write to megasquirt
9. Jump bootloader pins and cycle power
10. Code should count up by lines, but it gets to 75 and stops, computer still seems to be doing stuff, wait a while and stops working (the pc)
11. Car will not fire anymore
12. Reflash to .29v and repeat.

Car runs when you skip the easytherm settings, but not as well as it did before I tried easytherm, harder to start.
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Old 08-10-2007, 10:38 PM   #12
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gotta try esaytherm like 17 times...it will eventually work....

just click custom and go straight to download and use the mod file you created.

you could try using the MSII downloader and flash the MS with the same mod file.....but it's always taken me a few tries to get easytherm to upload...always freezes on 75 and 125, then finally goes.
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Old 08-10-2007, 11:59 PM   #13
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Yah I never got easytherm to work in the first or second time. It always took 3-5 tries. Also remember to unplug your ignitors.
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Old 08-11-2007, 01:29 AM   #14
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One thing I have found useful for a tune is setting your lowest KPA tune to between 17 and 18:1 AFR so that there is a smooth transition on and off of your overrun, it will also help curb an overly rich liftoff throttle. Or so I have found.
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Old 08-11-2007, 04:49 AM   #15
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Ok after a little bit of looking you have a wierd situation where your MAP sensor is reading 100kpa during many of your decelleration events at 0 Throttle position. I find this rather strange, but your Injector dutycycle's and Pulsewidths do not correspond for some reason and maybe this is just something that the PNP does for whatever reason, but it just seems odd.

Further, assuming you have the "JAW diy wideband", you need to open up your MSQ in megatune, go to:
FILE -> Configurator-> MSEXTRA029v -> Settings -> Settings -> Lambda Sensor
Then from this point I am really not sure what you would want to choose (as I do not know the specs of your sensor), but since your MSQ is telling the hardware that you have a narrowband when in fact you do not, It is screwing up your EGO correction which according to your datalog is turned on. (I believe its a 10-20v sensor since it seemed to get me the best results in megalogviewer, but idk)

Hopefully someone else can use this as a springboard to get you closer to a solution, good luck.
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Old 08-11-2007, 10:54 AM   #16
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Quote:
Originally Posted by akaryrye View Post
Ok after a little bit of looking you have a wierd situation where your MAP sensor is reading 100kpa during many of your decelleration events at 0 Throttle position. I find this rather strange, but your Injector dutycycle's and Pulsewidths do not correspond for some reason and maybe this is just something that the PNP does for whatever reason, but it just seems odd.

Further, assuming you have the "JAW diy wideband", you need to open up your MSQ in megatune, go to:
FILE -> Configurator-> MSEXTRA029v -> Settings -> Settings -> Lambda Sensor
Then from this point I am really not sure what you would want to choose (as I do not know the specs of your sensor), but since your MSQ is telling the hardware that you have a narrowband when in fact you do not, It is screwing up your EGO correction which according to your datalog is turned on
. (I believe its a 10-20v sensor since it seemed to get me the best results in megalogviewer, but idk)

Hopefully someone else can use this as a springboard to get you closer to a solution, good luck.
In both megatune (under exhaust gas settings ), and the configurator (under LAMBDA_SENSOR) I have it set to LC-1 wideband and I have adjusted the JAW's output settings accordingly, where does it show that I am using a narrowband?

No clue about the 100kpa and 0 TPS. It would explain my pig rich settings at times.
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Old 08-11-2007, 02:22 PM   #17
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my bad about the wideband, I forgot that it has to be set up whenever you download megatune and the MSQ does not transfer the config settings, so when I look at it, I should set it to the LC1 default in megalogviewer then correct?

Anyway, I think you should call DIY and ask about your tps/map thing
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Old 08-12-2007, 05:51 AM   #18
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by the way, this is my first look at the settings that diyautotune.com had loaded onto their plugnplay units and it's very helpful for me to see what they have done, I am even considering loading their spark n fuel maps to give them a shot.
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Old 08-12-2007, 08:38 AM   #19
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Quote:
Originally Posted by akaryrye View Post
by the way, this is my first look at the settings that diyautotune.com had loaded onto their plugnplay units and it's very helpful for me to see what they have done, I am even considering loading their spark n fuel maps to give them a shot.
At WOT and cruise the maps are GREAT. Just can't figure out this deaccel issue.

I will probably shoot Jerry an email, he may be interested in my issue with his map even if I am not running one of his MSPNP's.
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Old 08-15-2007, 11:45 AM   #20
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Did you get the code loaded successfully? If not, try grabbing our tuning software from this link:

http://www.megasquirtpnp.com/mspnp_downloads.htm

I believe the tuning software package on that link comes with pre-Easythermed S19 files and a batch file to download it.
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