jbbauer7

If anyone has tuned with Hondata and LM-1 please let me know how you connected the LM-1's analog output to the ECU.

Not sure if I should connect the LM-1's signal ground output directly to the grn/blk O2 sensors signal ground on the ECU harness. Because the grn/blk wire into the ECU is shared by a number of sensors.

SOUNDEFFECTS

I will let you know in a day or two....bump for a good question. Innovate has some info about it in there instruction manual but I haven't been able to tackle this task just yet.

jbbauer7

bump..

I ended up connecting my O2 wires to a DTDP switch so I can switch between NB O2 and the LM-1 output. This seems to work but I started having idle issues.. probably unrelated. So if anyone has some details on how they did the LM-1 to ECU connection for Hondata.

SOUNDEFFECTS

It took me about 2 days to street tune the car with hondata and the wideband. I just ran it in closed loop and still got code 41 for heater O2, I haven't got around to running it as NB just yet.

jbbauer7

does it damage the 2000 Civic SI's NB O2 to leave the sensor (wht wire to ECU) unconnected?

SOUNDEFFECTS

if anything its possible to damage the O2 NB sensor but I highly doubt it....Since its still hooked up like normal its functioning normal but the ECU doesn't get the reading so I would so your ok!

jbbauer7

hey thanks man sounds reasonable to me.

another question .. do you know if I can leave the ECU's EPROM in closed loop mode (permanently) and permanently connect the WB O2 to the ECU (instead of the stock). ie. I'm wondering if the O2 Volt vs AFR conversion gets downloaded to the ROM

SOUNDEFFECTS

If the eeprom is setup for closed loop then you don't need any signal going to the Ecu, it won't do anything. If it was open loop the the Ecu should make adjustments to fuel via long term O2 reading s and short term O2 readings. As long as its closed loop though your fuel settings should stay unchanged periord.

lek9l

http://ht-archive.org/showthread.php?p=12601846


To make life easier, make sure you use resistor type spark plugs, my hondata would lock up because I was using non resistor spark plugs. Also, when you wire it up make sure you have good connection to the ecu.

LM-1 Wiring Install:
Red (Analog 1 Narrowband 0-1V) = Connect to D14
White (Analog 1 Wideband 0-5V) = Connect to B6, D10, D14 (Remove necessary capacitors if needed, I used B6 but you got to remove R2 and R3 capacitors)
Copper/Brown (Ground/Logical Ground) = Connect to A26

Now you program the LM-1 using LM Programmer which can be downloaded. It comes with Log Works so download that at:
http://www.innovatemotorsports.com/support.php

Use the serial cable connect it to the computer, if you don't got that then buy one, if you dont got serial port, you will have to buy a serial to usb converter for the lm1.

Once you have it connected, open lm programmer, and set the programmer to the following:

Narrowband Wideband
Analog 1 - Red Analog 2 - White
0V to 10.00 0V to 10.00
2V to 20.00 5V to 20.00

Now open hondata Smanager and set the following in the closed loop tab in the parameters window:
0V 5
5V 20