Hondata

I hooked my AEM wideband o2 sensor up to my Hondata S300 and im not getting a reaading on the AEM gauge. I installed the white 0-5v wire to my 02 wire at the ECU and set the ECU in the closed loop via closed loop parameters. I disabled the o2 heater while in the same menu. I know that you have to off set the voltage after the install but I am not getting a reading on the AEM gauge to compare the offset. I am getting a reading in Smangager. This is what confuse me.

This is installed on a stock integra ls engine w/ 310cc injectors. I adjusted the fuel trim from the stock 240cc to 310cc and thats it. The car starts and idles fine once it's warm. When it is cold it searches a bit but stays at 1000 after warm


Can I drive my car in open loop and leave it like that with the wideband gauge hooked up? I have the stock tune provided by hondata on the ECU. Should I look towards the O2 being bad or running lean? Stock fuel pump and fuel pressure is 36 @ idle and I set it up with the injectors primed @ 41psi. Any suggestions would help.

Something is wrong with your AEM if your AEM gauge isn't working. Nothing you get into hodata can be trusted without the offset being calibrated.

Thats what I was afraid of. Is there a way to trouble shoot the gauge or the 02?

Warranty buddy.

The gauge works. I think it's either how I have it hooked up or it's the O2. I didn't run the ground straight to the chassis. I tapped the radio harness wire to get a solid 12v wire and ran the ground to the same harness. I noticed that the fuse popped after looking around for a while so. I am going to ground to the chassis and change the fuse and see if that works.

First you said you're not getting a reading on the gauge, then you say its working. Which is it dude, I'm confused here?

The ground for any lambda meter needs to be to the same point as the ECU, otherwise you'll get a voltage offset without the analog output. For the B-Series this is normally on the thermostat housing.

I hooked it up to the ground and it moved me closer to it but it was still a little off. I offset the voltage -0.1 and it's pretty much spot on now. Thanks for the help.