Need help!!

gangaran · Post by **gangaran** » Wed Sep 17, 2008 2:46 pm

I have a 02 EP3 type-R with a PRA ECU and Kpro.
I have a autometer wideband a/f gauge.
What I would like to know is, where do I connect
the 2 wires comming from my gauge on to
ECU?
I want to datalog my a/f ratios.

Post by **Spunkster** » Wed Sep 17, 2008 2:55 pm

Go to Options, Settings, Wideband Input. There you will see the options you have.

gangaran · Post by **gangaran** » Wed Sep 17, 2008 10:02 pm

Wideband input.

* Use the built in wideband lambda

* Use an external wideband from the ELD pin

So, I think that I can use my a/f meter with my ECU,
but I need to know where do I need to connect the
2 wires to my ELD pin.
Because now I can't datalog my a/f ratio.

gangaran · Post by **gangaran** » Thu Sep 18, 2008 6:49 am

Maybe this pic would help

Those 2 wires, I need to connect to the ecu.

Conquistadore · Post by **Conquistadore** » Fri Sep 19, 2008 7:51 pm

I checked the installation guide for Wideband Air/Fuel Ratio
Wideband A/F Kit (7378)

The Blue/Black & Blue wires seemd that they are both 0-4V signal outputs.

You should connect one of them to the ELD PIN (E15).

You need to know what voltages corresponds to what AFR and enter them into Voltage / Lambda Conversion Table (Settings > Wideband Input) so that KManager can datalog.

You may also need to change the voltage offset.

I hope this helps...

gangaran · Post by **gangaran** » Sat Sep 20, 2008 8:48 am

Ok, thanks for the info.
So what you're saying is that I only need to connect one of the 2 wires to the E15 wire?
The other one just ground or leave it open?

Conquistadore · Post by **Conquistadore** » Sat Sep 20, 2008 9:45 am

Be careful friend!

What I understand from the installation guide for Wideband Air/Fuel Ratio
Wideband A/F Kit (#7378) I don't know the model of your gauge so I picked #7378, those are both 0-4V signal outputs which means they are both +.

Never connect one of those to ground or you may damage the whole unit!

Please consult your dealer or your electrician first! You may permanantly damage your ECU, KPro board or the Gauge.

Connect one output to your ELD PIN (E15) and insulate the other. You may want to consider putting a 5.1 V zener diode between the ECU and the signal wire (Blue). So that the gauge will not send any voltages above 5.1V which may damage your ECU in case of malfunction.

In addition this you must power the gauge via switched source (You would want to power up the gauge when you switch the ignition ON.) and don't forget to connect a proper fuse to the +12V power cord (Red wire).

Proper grounding is required for accurate AFR readings.

An experienced technician who has a knowledge of car electronics should do that for you. You may damage your ECU, KPro board or the Gauge.

Good luck :)

gangaran · Post by **gangaran** » Sat Sep 20, 2008 11:47 am

The power source for my gauge is switched( So when I turn the key, then I have power)

Found extra info of the blue/black and blue wires.

Blue Wire (Optional Data Logger Signal Output):
Connect to signal input(+) or Engine Management System
or Data Acquisition unit.
Blue/Black Wire (Optional Data Logger Signal Ground):
Connect to signal input(-) on Engine Management system
or Data Acquisition Unit.

Thank you for the good feedback. I wanted to connect this
myself, but I'll make an appointment with my Hondata
dealer.

gangaran · Post by **gangaran** » Tue Sep 30, 2008 2:03 pm

Ok, I contacted autometer and now know how to connect the wires. I need to connect the blue/black to the ELD pin 15.
Next I need to change the settings in Kmanager.

Now, 3 questions;

* What should I choose at "Quick select"?? Because I can't find my a/f meter there.
* The voltage table is it enough like that? Because the voltage a/f is linear. Or do I need to fill it in more specific?
* Last one: Voltage offset, do I need to let it on 0V?

gangaran · Post by **gangaran** » Wed Oct 01, 2008 2:33 pm

Anyone?? :(

Conquistadore · Post by **Conquistadore** » Wed Oct 01, 2008 4:46 pm

1. Select Custom from the quick select combo.
2. If the voltage / AFR is linear you don't have to fill in all the table (filling in all the table won't hurt, I did it that way).
3. Look at the gauge and AFR in the KManager at the same time. If both are showing the same AFR then the Voltage offset should be 0, else you should find out what offset works for you.

The aim is reading the same AFR from the gauge and KManager.

There is a simple way of doing that for AEM UEGO. I pull the sensor plug out and the gauge shows 14.7. Then I check KManager to see what AFR it is reading. Then I start to play with the Voltage offset untill I see 14.7 in the KManager display.

If you don't have that option, you can do this:

Let the engine run for 30 seconds, stop the engine, turn the ignition on (don't start the engine), start datalogging (press F10) try to set the voltage offset. Since the AFR changes quickly while the engine is running, this method will be more accurate.

I hope this helps.

Good luck :)

gangaran · Post by **gangaran** » Wed Oct 01, 2008 9:53 pm

Thanks, great info. I'll update you later when I hook everything up.

gangaran · Post by **gangaran** » Sun Nov 02, 2008 3:31 pm

I finally connected my wideband to my ecu today.
I just needed to cut the ELD wire and connect it
to the A/F meter wire.
Changed a few settings in Kmanager and that's it.

Thanks for the help(again) :lol:

Now, I'm going to have some fun with Kpro. :twisted: