Cliff Harris

The 1227165 ECM has the following inputs:

Pin D8 - ADC Channel 0, MAP2
Pin A6 - ADC Channel 1, Ignition voltage
Pin D7 - ADC Channel 2, O2 sensor voltage
Pin C11 - ADC Channel 3, MAP
Pin C10 - ADC Channel 4, Coolant sensor
Pin C13 - ADC Channel 5, TPS voltage
Pin B2 - ADC Channel 6, Fuel pump voltage
Pin A9 - ADC Channel 7, ALDL pin B voltage
Pin C12 - ADC Channel 8, MAT Temp
Pin B11 - ADC Channel 9, ESC
Pin B12 - ADC Channel 10, MAF voltage

You will probably have to do some math to convert what the ECM thinks it's seeing to something that makes sense (like AFR). My car does not use the MAP inputs, so those are obvious choices. I have heard of people using the MAT input because it's only used for EGR enable. One advantage of using this one is that the wiring is already in the engine compartment.

I have a Powerdex AFX and the output is 0 to 5 volts, corresponding to 9.0 to 16.0 AFR. Fortunately the output is linear so the math is very simple.

tunedport85inject

guys the Innovate Lc-1 has a gauge output for the dash gauge,a serial output TO USB that allow you to use the bundle software Logworks,more there's an O2 output to use your wideband heated sensor as your ECM o2sensor.i've used for a while my wideband as ON car o2 sensor. i've used the stock o2 sensor pin on ECM and disconnected the stock narrowband .As for datalogging AFR you can simply use Logworks that comes with LC-1
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jsiddall

11.8 is on the rich side but still inside the MBT (mean best torque) band which means your engine is safe (that's a good thing) and you are getting essentially the best power you can out of it (that's what MBT is). There is no advantage I can see to going leaner. Definitely don't go any more lean than the lean end of MBT which is about 12.8.

Correct. Look at actual values.

You are all set then! The LC-2 has this feature:

*Two fully programmable linear analog outputs to connect to analog gauges, dyno computers, ECUs, piggyback controllers, and other devices with analog inputs. Analog Output #1 (Yellow) is configured as 0 volt = 7.35 AFR and 5 volts = 22.39 AFR; Analog Output #2 (Brown) 1.1 volt = 14 AFR and .1 volt = 15 AFR. With the provided LM Programmer software these analog outputs may also be configured by the user.

Bottom line is the analog 2 output is setup to emulate a narrowband sensor and can be directly connected to the narrowband input of the PCM.

MikeT 90 C4sixer

I have the analog out#1 going to my 165 ECM pin D8. I think it was an unused input. My definition file is modified to read the AFR at that location. I think my datalogged MAT is stuck at -40 because the modified code used it for AFR display. You have to program the output in your AFR controller, to the correct ratios, to get it to come out right. I tweaked it a little bit over the winter, but have not datalogged yet. Also, i changed the AFR for E10, but i think i am going back to pure gas, since it is available now locally for me.

shinzon

with my car i noticed when the car below peak to torque peak torque rpm it likes 12.5-12.3 afr. up top like after 4.5-4.8 to red line it made more power with below 12.0 afr. all cars are different and intake/exhaust componants make a difference. if ur car makes more power with 11.0 afr then 12.0 afr then thats what u should be at. just make sure ur using a wb to adjust afr and limit the knock to 1-3 counts.