wiring in a LC-1

[Darrell Tuxworth]

Called Innovate tech support due to discrepancies between the info on the website and the paper directions that came in the box with the LC-1 kit.
According to tech support the brown LC-1 wire goes to the gauge and the yellow goes to the ECM ( the website states the opposite) The yellow wire has two settings 1-1.1 volts and 0 to 5 volts.
Question is I need to reprogram the yellow wire to provide 0 to 5v right?
I ask this question here because tech support had no idea what I was talking about when I mentioned the GM 1227747 ECM used in EFI retrofitting so he couldn't answer what setting I needed. SInce the system uses 5V reference I bet that is what I need.
Darrell

[Bill usn-1]

You send the 0-5v to the WB gauge.
The other out put should be a simulated NB output.
IIRC it's .6v but the directions should tell you what the NB output settings are.

You have 2 ways to use it.
1. Install another bung in the other down pipe or at the crossover and install the WB O2.
Log data with the log works software at the same time as logging winaldl.
The system will be using the NB feedback and you can verify the actual AFR on the logworks.
It may help to disable the PE and AE at first to set your BLM to about 126-128 for the normal closed loop driving.
Once the normal BLMs are set then turn them back on and log your quick stabs of the throttle and look for dips and rises in AFR and adjust as needed.
Then the WOT is checked for PE since the NB is ignored the WB is needed.
Tune for about 12.5:1AFR

You can also set the closed loop enable temp to max to prevent the system from dropping back into closed loop and using the NB O2 during AE and PE testing.

The other way is to just remove the NB sensor and use the LC-1 NB simulated O2 output to the ECM O2 sensor input and do everything else the same as above.
Still logging with logworks and winaldl or tunerpro if you prefer.

[Darrell Tuxworth]

The plan is to use the WB o2 output to run the ECM. The wire that needs to control the ECM can be set to two different voltage ranges....One is 1.1V (14 AFR) to 0.1V (15 AFR) the other is a range from 0V (7.35 AFR) to 5V (22.39 AFR).
I need to use the 0 to 5 volts to signal the ECM right?
Darrell

[Bill usn-1]

No,
As stated you run the WB 0-5v to the WB gauge or just datalog the WB signal.
WB O2 output is a linear 0-5v.

NB is a set voltage for stoick. When using it for gas stoick is 14.7:1 AFR.
If you run E-anything then the stoick will change.

If you want the LC-1 to input the 7747 then you have to use a simulated NB signal not the WB 0-5v signal.

WB is a stand alone system just like pulling up to the Dyno and having the WB O2 probe in the exhaust.

[Darrell Tuxworth]

Ok thanks for the clarification. I will use the default 14-15 AFR setting which is stated in the directions as simulated narrow band.
Are you using your WB to control your ECM.
Darrell

[Bill usn-1]

Nope,
I run it stand alone. That way i can compare the systems NB O2 and see if it's close.
Let's you know if you bought a cheap Bosch O2 sensor or not!!