For a long time we guided customers on how to re-program their LC-1 / LM-1 / LM-2 to output a slightly different signal from default. The goal of this was to increase the resolution of the signal in the range of AFR most users will spend their time in. We used to recommend programming the output you were using to send a signal that represented a 10-20:1 AFR from 0-5v. While in theory this is great and does increase resolution a bit, in practice it’s not really needed and is probably more trouble than it’s worth for most users. We now recommend leaving the analog outputs on your LC-1 / LM-1 / LM-2 at their default settings (which is 0v = 7.35:1 AFR, and 5v=22.39 AFR). Proceed to configure the TunerStudio tuning software to allow your MegaSquirt EMS to properly talk to your LC-1 / LM-1 / LM-2 do the following:
MS1/Extra:
With your TunerStudio project open, go to:
File > Project > Project Properties and click on the Settings tab
Under EGO O2 sensor, chose the right option (Innovate LC-1 Default) for your wideband in the drop down menu and click Ok. TunerStudio will quickly restart and take you back to the main dashboard.
Next, click on the Basic Settings tab and chose Exhaust Gas Settings. You will need to change your EGO Sensor Type to wideband. Burn the change to your MegaSquirt.
Your AFR Targets Table will open underneath the More Settings tab.
MS2/Extra:
With your TunerStudio project open, go to:
File > Project > Project Properties and click on the Settings tab
Under EGO O2 Sensor, chose the right option (Innovate LC-1 Default) for your wideband in the drop down menu and click Ok. TunerStudio will quickly restart and take you back to the main dashboard.
Next, click on the Basic Settings tab and chose EGO Controls. You will need to change your EGO Sensor Type to wideband or dual wideband as appropriate for your setup. Don’t forget to burn the change to your MegaSquirt. Lastly you will need to go to the Tools menu up top and click on Calibrate AFR Table. Chose your sensor type (Innovate LC-1 Default) in the drop down menu, and click on Write to Controller. This is a one way flash, so don’t be alarmed if your settings don’t ‘stick’ in this menu after you’ve sent them to the controller. After the write is complete, click Close.
Your AFR Targets Table will be under Basic setup > AFR Table 1
MS3:
With your TunerStudio project open, go to:
File > Project > Project Properties and click on the Settings tab
Under EGO O2 Sensor, chose the right option (Innovate LC-1 Default) for your wideband in the drop down menu and click Ok. TunerStudio will quickly restart and take you back to the main dashboard.
Next, click on the Fuel settings tab and chose AFR/EGO Controls. You will need to change your EGO Sensor Type to wideband. Most setups will use a single sensor with the input received on DB37 Pin 23. If this is the case for your application, enter 1 for Number of sensors and set your EGO Channel to Normal EGO. This is a pink wire labeled “O2” on our harness. If you are running multiple widebands, you will be able to set that up in this menu as well. Don’t forget to burn the change to your MegaSquirt when finished.
Lastly you will need to go to the Tools menu up top and click on Calibrate AFR Table. If the option for Calibrate AFR Table is grayed out, you will fist need to go to Tools > Un/Lock Sensor Calibrations, choose Unlocked, and Burn and Close. Then you will be able to access the Calibrate AFR Table menu under Tools. Choose your sensor type in the drop down menu (Innovate LC-1 Default), and click on Write to Controller. This is a one way flash, so don’t be alarmed if your settings don’t ‘stick’ in this menu to be later viewed again after you’ve sent them to the controller. After the write is complete, click Close. If you desire, you can lock your sensor calibrations again by visiting the Tools > Un/Lock Sensor Calibrations menu again.
Your AFR Targets Table will be under Fuel settings > AFR Table 1