Help me out identifying this screen *pics*

[firebirdvert305]

Im using MMCD for my logging of my car...im wondering what this screen is...and what those values represent...if anyone can help me out, id really appreciate it.
http://imageigloo.com/viewer.php?id=189idle3.gif

 

[perley03]

Im using MMCD for my logging of my car...im wondering wut this screen is...and what those values represent...if anyone can help me out, id really appreciate it.
http://imageigloo.com/viewer.php?id=189idle3.gif

If you open up MMCD, then click on MMCDLog on the very top, go over to Options>prefferences, then click on the i up in the right corner, it will tell you all the sensors. Just scroll down it will tell you.

 

[steve]

That looks like a pretty old version of MMCD.

You are looking at the Fuel Trims (low, Mid, High), the O2 Feedback, the MAF Airflow, the MAF Air Volume (not needed), and the raw Oxygen Sensor voltage.

When the car is operating in closed loop the ECU uses the O2 sensor voltage for feedback on how well the expected fuel ratio for 14.7:1 matches the actual. It does this by increading or decreasing the AFR and watching for the sensor voltage to change. The O2FT is the result with 100% being no change, <100% richer, >100% leaner. Depending on the MAF Airflow this value gets averaged into the Low, MID, or HIGH long term fuel trims and those are used in the fuel calcs.

Steve

 

[firebirdvert305]

hey steve thanks for the info...i did a search prior to this and finally came up on tmos website....they contradict what you just said....they said 100+ = lean 100 and below = rich. Are you 100% sure or was it a typo?

 

[kraka]

Glad you got it figured out...And glad I could help earlier...Contact me with more tuning questions
-Josh
Chicago_DSM

 

[steve]

I don't think I got them backwards, numbers <100% are richer, numbers >100% are leaner. That's consistant with what's on the TMO site. Did you misunderstand?

Steve

 

[firebirdvert305]

sorry steve...got it figured out...also steve can you pm me pricing on custom eprom chips?