This is a write up to wire a NGK AFX Wide band to your hptuner with out the inputs on the tuner by using the egr circuit.
NOTE: You have to disable your egr to use this method.
1. Solder an extension on to the yellow out put wire.
2. Run the wire into the engine compartment.
3. Locate the brown wire on the egr connector. This is the egr position reference wire for the pcm.
4.Solder your extension from the yellow output wire to the brown wire on the egr connector.
5.I cut off the other wires from the connector and taped them off, so I could get rid of the unused connector.
6. Tie up the wires out of harms way.
7. Now you have to make a custom pid in the HPtuner scanner to log your A/F ratio.
8. Open the primary table in the scanner.
9. Insert the egr position pid to the table. It is located in the engine section under emissions.
10.Now you have to go to configure user defined and make a custom pid
11.I called mine wideband units will be afr. Then copy this into the function box ([PID.2811]*1.4)+9
12.Apply all the changes
11. Now go to the histograms and create a new one
12.For the plot value enter your custom pid for the wideband
13. Go to the table your the y header and select primary ve vs. RPM vs. MAP This will allow you to use your wide band to tune you WOT a/f ratio. It will be under the 140kpa section
Hope this helps some cheap people like me who did not drop the money for the pro interface and still want to use a wideband to log a/f ratio.
Originally Posted by matt5112
