Wideband O2 wiring??

[theMelvster6]

I installed an Innovate MTX-L Wideband O2 sensor on my bike a few months ago. I wired it through a relay using one of the head wires as my trigger wire that has constant 12v with Key-on. Then of course I used 12v direct to the battery to power the wideband controller off the relay. The issue I'm having is, when I put the killing switch in run position and start the bike, that trigger wire I used loses its 12v while I'm starting the bike because of the starter. And the headlights go out normally...which causes my wideband controller to give me a momentary low/loss of voltage error until the bike fires. I was thinking about running a 30 second or so time delay relay to trigger the controller to come on 30 seconds after the bike is started to avoid getting the error...OR is there a better way to do this with running just a toggle switch straight to power (I guarantee I'll forget and leave it on) LOL

 

[Sirius815]

Hm...I never had any issues with my wideband giving any errors (I also ran the MTX-L) after power loss. I didn't run a relay for mine, though I wouldn't think that would cause an issue...

 

[theMelvster6]

I'm in the process of rerouting some wires so I may find a better source. I'm sure it has something to do with the lighting circuit dropping the voltage when you push the start button to energize the starter. I used a relay per the manual

Circuits that share power with the vehicle’s stereo, ignition system, ECU, lighting, or fuel pump should not be used. When in doubt, create an additional circuit using an automotive relay available at any automotive parts supplier. See the next section for a relay installation diagram.

 

[Sirius815]

I honestly can't remember where I got the power for mine. Sorry I can't be of more help.

 

[cjmech]

Ive been using the innovate stuff on one of my cars since they first came out and have been thinking about installing one on my 07 12r.

Couple questions for you if you dont mind.

Are you using a single sensor setup or dual front and rear?

Are you using the wideband in place of the narrow band using the narrowband output to the ECU for closed loop operation?

 

[Sirius815]

If that question was towards me, I used a single sensor setup as I didn't want to add a bung to the front header. I used the wideband in place of the narrow band and ran a narrowband output to the ECM when I wasn't tuning the bike. I turned off the narrow band and switched to wideband output for data logging.

 

[cjmech]

Yes that is what i was asking. I was thinking that I want to add the one to the front because each cylinder has its own map but use the rear sensor as the primary for closed loop operations when not doing any tuning. Just pull the front one out and install a plug when not tuning so its not a full time install.

As far as the wiring concern have you checked the voltage drop to your circuit? Does it completely shut off when you crank the bike or just drop voltage for a few seconds? I am looking to upgrade the main power and ground cables to high strand count cables. This has always lead to better electrical system performance on past projects. If its a voltage drop issue this upgrade might help with this problem.

 

[theMelvster6]

I'm not exactly sure, I think I'm just going to use a time delay relay to power on the wideband after a few seconds so I don't potentially damage the unit by losing power.

 

[Sirius815]

There are cheap delay board available on Amazon (albeit they ship from China) that should work really well for your uses. And you can adjust the delay but just soldering in a few different components.

http://www.amazon.com/PowerArt-Swit...&qid=1419952928&sr=8-1&keywords=delay+circuit

For 3.77 you can't beat it!

 

[theMelvster6]

I've got a couple different ones coming...one is 0-30 second delay. Pretty basic. The other is a 0-999 second board with a little digital count down read out.