I instaled an Innovate LC-1 wideband a few days ago. I completely removed the old 02 sensor and just put this one in its place. The LC-1 has an output that mimics the stock narrow band signal that you can use to fool the ECU and get rid of the CEL. What im wanting to know is , can i just tap the wire that mimics the narrow band signal into the ECU.


I know which wire on the ecu carried the stock narrow band signal. What im wanting to do is just tap into that wire with the wire from the lc-1 using something like this..


Will it work?

 

I tried it and it didn't seem to work. Do i need to clear the cel after i do this or will this not work at all.

 

very interested

 

I ran a LC-1 in my SRT-10 truck. Great little product!

Didn't interface with the ECU tho... it will probably be easier to have an exhaust shop weld an extra O2 bung on your header and have both sensors.

 

you can send that narrowband output from the lc1 to the ecu, but you still need to do something to fake the o2 sensor heater circuit as well. That is probably what your CEL is really for. Basically you need 2 signals to trick the ECU into thinking the stock o2 sensor is still there.

 

How would I send or emulate the heater circut?

 

The best way to fake the heater circuit is to just leave the OEM O2 heater circuit connected. I just left mine tie wrapped to the transmission.

That said, why are you trying to do this? The only benefit I can think of to use the LC-1 in place of the stock sensor is so that you don't have to weld in another bung. The down side to doing it is that the LC-1 tends to go through sensors pretty quickly, so your overall reliability will go down if your ECU is relying on the LC-1 for closed loop fueling. I would rather keep the LC-1 separate, and just use it for tuning and validation.

 

Im on a 75 shot of N2O and i have a lean cut off switch, so im needing wideband pretty much all the time. I thought it would be easier to wire up the lc1 rather than remove the header and have a new bung welded in..

 

If you have a test pipe, you should really just have a bung welded into it, and leave your stock primary O2 alone.

 

If your S2000 is your daily driver, then I can't urge you enough about leaving your stock primary sensor alone. I'm in need of my 3rd wideband sensor now, and it would have been a really PITA if I wasn't able to drive my car each time my wideband sensor decided to take a duece.