Are you trying to read the data when the car is running?

 

yes car is runing i Check the boxses

 

I have another issue that the logging stopped in btw, and reinstall not helps.

 

You should try and contact Durametric directly. If the OBD interface is active, your car is running, and you have correctly selected the ECU, the data should be displaying.

 

You might be using an old software version

 

Something to keep in mind is the type of fuel you are running. In Texas anyway (and I suspect in a lot of places) 93 octane fuel is actually an E10 (10% ethanol, 90% gasoline) blend.

The wideband sensor does not determine what percentage of the fuel is alcohol, it measures the amount of oxygen present and delivers a lambda number.

1.0 lambda on gasoline = 14.68
1.0 lambda on E10 = 14.13
1.0 lambda on E85 = 9.85

If the fuel you are using is an E10 blend you will normally see a small notice on the pump that states that the fuel you are using may contain up to 10% ethanol by volume. Read this to mean that it DOES contain 10% ethanol, and you are running E10 as opposed to pure gasoline.

My Turbo (stock except for Europipe/BMC filter) seems to run about .84 - .86 lambda through the power band, getting richer towards the top.

The formula for this is simple;

(Stoich)x(Lambda)=AFR

E10 AFR at .86 lambda
(14.13)*(0.86)=12.15 AFR
E10 AFR at .84 lambda
(14.13)*(0.84)=11.86 AFR
Gasoline AFR at .86 lambda
(14.7)*(0.86)=12.6 AFR
Gasoline AFR at .84 lambda
(14.68)*(.84)=12.33 AFR

Most inexpensive aftermarket wideband setups measure lambda, but then multiply the result by 14.68/14.7 to give you an AFR number on the display. Keep in mind that depending on the fuel that may not be entirely accurate. It's probably best to ditch using AFR in general to describe fueling, and stick with referencing Lambda values as they are consistent across fuel types.

Hope this helps.

 

Good info - thanks for posting!

 

great info in this thread. Thanks bob!

 

sub;d

 

Great writeup...very helpful!!!

Which Durametric values should we monitor for AFR that you referred to as "pre catalytic actual lambda"?

These two?
Oxygen sensing, bank 1 Lambda Value
Oxygen sensing, bank 2 Lambda Value


Danke schon,
Cliff

 

Any answer to this pls. .?

 

The Excel File has this in it as the column header, and this is what Softronic needed:

Actual lambda value bank 1
Actual lambda value bank 2

Thanks,
Cliff

 

Bump.
Gr8 thread.
Any updates on this ?

 

Some great information here guys, I need to log a few things on my 996 Turbo using a pro cable and latest software, problem is I am a complete numpty when it comes to either 1) using a PC and 2) learning how to do things from written instructions (if i watch someone then I sorted) is there a step by step guide on how to log using the durametric ??? Thanks guys, also can we see turbo actuator duty cycle? Ive had to refit my stock actuators to work with the APR remap i am trying out and I struggled to get the car to hit over a bar of boost, ive put quite a lot of preload on the actuators and now hit 1.1 bar but APR have told me to log requested and actual boost and also the duty cycle to fine tune the actuators (ie the lowest duty cycle to hit the requested boost) I know the actuators are fine as they were holding 1.2 bar on our own map.

 

Help with reading live oil temps.... I am getting bogus values and I am not sure which item to select to get a good read. Any help here? Also, can I pull my gear number and what Dura parameter (manual box)?

2009 C2S.. I know this is the turbo forum, but you guys appear to be the smartest (!!).

Here is a longer post I made over at the other board: http://rennlist.com/forums/997-forum...l#post11824504

Here is a link to the Durametric output for live values I collected, notice the oil temp readings are really bizarre. http://mywebpages.comcast.net/bruced...r/C2SDURA1.xls

Peace,
Bruce in Philly