So you want to use this O2 sensor?
From what I see in there, it only has 2 wires, so it does not have the heating element in it. That one went down on my car and after replacement, the fuel mileage was better. Are you sure you want to do this?
Why don't you mount a 3.5 bar fuel pressure regulator, like I did? You will really feel the improvement then
Dan, That is the unit. The Bosch Wideband with that is 4/5 wire and plugs into the LC-1.
The LC-1 has a wideband output AND a simulated-programmable Narrow Band output. In order to make use of the Narrow output, I need to attach a connector like the one on the orignial Narrow Band O2.
Boosting the pressure or bigger injector nozzles would richen the Open Loop mixture but once the bike goes closed loop, which it does half or more of the time, the AFR goes back to stoichiometric about 14.1:1 for the E10 fuel we get up here.
I have used a BoosterPlug to slightly enrichen the Open Loop mixture. It is the Closed Loop mixture I'm looking to slightly alter.
I know I'm not answering your question but this
will take you a long way without alot of cost or effort.
Ed, Thanks. I've studied the Techlusion products and they're not what I'm looking for. I think the Motronic is pretty good, just a bit lean in Closed Loop mode.
The LC-1 has a Narrow Band output and I'll program Lambda (AFR) down from 1.0 in small steps. This way I'll have control over the closed loop fueling ratio but still keep all the functions of the Motronic intact.
The BoosterPlug is interesting. It only affects Open Loop modes but its 6% enrichment just about matches the 4% enleanment of E10 fuel. So I think Open Loop is good just now.
Unfortunately the output waveform from a wide band 02 sensor is totally different than the standard narrow band 02 output so there is just no way your current Motronic fueling computer can in any way use a wide band 02's output.
In a nutshell the current narrow band 02 works more like a switch than a real sensor. The wide band has a more linear output that your current fueling computer will just ignore after a very short time in operation.
Your current Motronic needs an 02 input that toggles across .5 volts as kind of a yes/no signal. So if it sees the input signal from a wide band it will just assume a defective 02 sensor.
If it was an easy thing to fool the older narrow band fueling computers into using a wide band sensor's output the internet would be full of such devices to update older fuel injection systems.
If you want your 04 1500RT to run a bit richer just unplug your stock 02 sensor as that will force open loop operation & take away the stock 02 control. Open loop uses the base fueling map trimmed by input from the other engine sensor inputs (but no 02 sensor control)
Or if you want some control over the fueling richness either add a Techlusion fuel controller or add a Power Commander.
The Techlusion works in conjunction with your present narrow band 02 sensor then spoofs the 02 signal when it needs to add extra fuel.
The Power Commander needs the stock narrow band 02 disconnected to operate. You can add a wide band to the Power Commander but it doesn't use the wide band to fuel to, it just uses the wide band as a input device to initially learn from.
Good Morning D.R,
There are two outputs from an LC-1:
1) programmable Narrow Band output, sharp transition 0V to 1V, that can replace the stock Narrow Band O2. I need a connector to attach to this wire to plug into the Motronic. If worse comes to worse, I'll cut the connector off my good O2. This has been used on Motorcycles before. Zeitronix also makes a unit I considered, the ZT-3.
2) wide band linear output 0v = 7.35:1 AFr, 5V = 22.39:1. This will drive a small AFR gauge I plan to mount at least temporarily.
The Techlusion boxes are reasonable but affect the Open Loop mode more than closed. And it keeps the Narrow Band sensor so Closed Loop can only be Lambda=1 (14.7 AFR).
The Power Commander III USB is something I seriously considered. It uses the same Wideband Sensor as the LC-1 but adds fuel map modification capability that I'm not looking for yet. By taking control of the Closed Loop mode from the Motronic, it's a bit more invasive than I'd like. It interecepts the TPS, both Injectors and the O2 Sensor and Closed Loop.
One interesting thing I noted while playing with the PC III software, it starts Closed Loop AFR at 13.8:1 (Lambda=0.94) !! This is a big hint to all of us that the bikes run better with a Closed Loop fueling ratio nearer that number. I plan to start Lambda at 0.98 and work downward in 0.02 steps.
If you look toward the bottom of this page: R1150RT Open/Closed Loop Data
, you can see how much of the time the bike runs Closed Loop, even going Closed-Loop-lean during acceleration!
I'm excited to see what dropping the Lambda with this sensor will do and appreciate everyone's support and interest. Below is a chart of one of the graphs from the above link.