MMCD Preference list

[James Bondage]

Hey all I just wanted to double check my settings within MMCD. I am using version 1.8g. Under the Preferences tab this is what I have.

COM: 1920
Units: English
EGRT: 3.0 BAR
Vehicle: DSM
ECU Clock: 100%
Base Time: 5*
Alarms: checked
O2 NonLin: checked
AutoLog: checked

Do these look ok? If not then what do I need to change.
Thanks

 

[steve]

I prefer unchecking O2 NonLin:

The rest are fine unless you have something other than a 3 bar map sensor attached to your EGRT input.

Steve

 

[RSTurboFWD90]

Where can I get MMCd 1.8g?

 

[James Bondage]

I prefer unchecking O2 NonLin:

The rest are fine unless you have something other than a 3 bar map sensor attached to your EGRT input.

Steve

Thanks you sir. I will go ahead and uncheck the O2 NonLin. I assume I have a 3 bar map sensor. It is all stock.

 

[blackbyrd]

Where can I get MMCd 1.8g?

http://hometown.aol.ca/JERSTER/Dsm+stuff/Logging/mmcdv18g.zip

 

[steve]

I assume I have a 3 bar map sensor. It is all stock.

No, in that case you have nothing on the EGRT input unless you have a California car.

There are also a bunch of other parameters that don't do anything useful on a DSM in 1.8g.

Because of how the OBD1 datalogger interface works, these are just displaying the value of some memory location inside the ECU if you turn them on..

First page:
0-5v (this is the EGRT input)
O2-F

Second Page:
VSPD

Third Page:
FLGS (seems to still have bugs displaying IPS)

Fourth Page: (the memory address/logger command))
MAP (E0)
OILP (E2)
EGT (E4)
OILT (E6)
FUEL (E1)
WBO2 (E3)
PLEN (E5)
PUMP (E7)

In earlier versions of MMCd the original author had provided the fourth page for 8 custom things you could log. All you needed to know was the datalogger command to access the parameter. Clint added defaults to support his HSLogger product and hardcoded the conversion routines for the items on the fourth page breaking some of the functionality and confusing people who didn't buy his product.

He also added to the preferences menu a car type parameter and it's default is 3/S. That winds up changing how some of the conversion routines display the logged values like how TIMA is output.

Steve

 

[James Bondage]

So do I need to select another value on the preference page for my EGRT or does it not matter to my car at al.

 

[steve]

You don't need to do anything.
Just understand that MMCd 1.8 is going to have items you can log that aren't going to be "real".

Steve

 

[James Bondage]

Good enough Steve. Thanks everyone for the clarification.

 

[imdrax]

Bringing this one back up. Few of questions.

I am curious about why you recommended against checking o2 nonlin?

I noticed also that my vspd cycles at a stand still, is this normal or should I be reading a true value of 0 here?

I know that with the federal ECU's the EGR pin for the ECU is unused and can used to tap a WBo2 signal in, if I am running a CA ECU and my EGR is blocked off can the same thing be done or does the CA ECU prevent the signal from being input?

My airt reading is constant so I am assuming this is because of running the MAFT correct?

 

[steve]

Bringing this one back up. Few of questions.

I am curious about why you recommended against checking o2 nonlin?

Because I find the graph more readable.

I noticed also that my vspd cycles at a stand still, is this normal or should I be reading a true value of 0 here?

Did you read post #6? If you did, I'm not sure you understood it.

I know that with the federal ECU's the EGR pin for the ECU is unused and can used to tap a WBo2 signal in, if I am running a CA ECU and my EGR is blocked off can the same thing be done or does the CA ECU prevent the signal from being input?

I'm surprised you don't have a CEL for the EGR but I don't know exactly what triggers it on CA ECUs. It hasn't been something that interested me.
You have the EGR blocked off but do you still have the valve and it's temp probe connected? Without converting the ECU to Fed I have doubts that you could use it for WBO2 input without causing a EGR fault.

My airt reading is constant so I am assuming this is because of running the MAFT correct?

Correct, The MAFT provides a constant IAT resistance to the ECU, something like 80F or so, IIRC

 

[imdrax]

I COMPLETELY misread what you were saying. Now that I went back and reread very carefully I understand what that those parameters you listed in post #6 are not applicable to the DSM. I originally interpreted that post as a list of additional features of the 1.8 software. Thanks you.

I do not know why the car is not throwing an EGR fault either. The valve itself is still bolted to the IM but the vacuum line is disconnected as well as the coolant probe is disconnected. The connector for the EGR I am not sure whether or not it is connected but I have a block off plate in the mail so I will find out soon enough. The previous owner went so far as to cap off the PCV valve for some odd reason!!!

Back to the o2 nonlin, I read through the info tab on MMcD and I can't quite understand what this function actually accomplishes. If I am interpreting it correctly it switches the graphs min value for the o2 at .8 and max at 1v so that the o2 graph is of that section only?

 

[steve]

Back to the o2 nonlin, I read through the info tab on MMcD and I can't quite understand what this function actually accomplishes. If I am interpreting it correctly it switches the graphs min value for the o2 at .8 and max at 1v so that the o2 graph is of that section only?

The way I read it when checked it only displays the upper half of the O2 output. I assume it's for people to think they can tune by looking at the narrowband sensor output and want to aim for .87v vs .92v or whatever. Like I said I don't find it useful.

 

[milby43]

Hate bring a thread back. I reread your post, but it differs with other threads I have been reading. If I tap the pin 15 on my ecu. (EGRT) can I log my wideband 0-5v through it? Im running mmcd 1.8g. I've been reading you can. But Im not sure what parameter it will log through.

 

[steve]

Hate bring a thread back. I reread your post, but it differs with other threads I have been reading.

Perhaps you didn't read this thread very closely.

The original poster said his MMCd was configured to interpret the signal on the EGRT input as a 3 bar MAP sensor. So I told this that was fine unless he didn't have a 3 bar MAP sensor attached there. To which he said his car was stock and as we all should know 1G's don't come with a 3 bar MAP sensor attached to the EGR Temp sensor input from the factory. There is either nothing or a EGR Temp sensor on the California cars.

A quick check of 1.8g shows that there are several other options under the preferences for how it will display the EGRT input including Wideband O2, 0-5v, and EGRT. Keep in mind that different Wideband O2 sensors convert the output voltage to Lamda values so your might not match what Cliff was using.