WBO2 Integration

[arthansen]

I got my LM-1 two weeks ago and have been dying to get 1.5 to integrate it to HP Tuners. Got sick of waiting so I wired the analog output of the LM-1 to my rear O2 sensor input to the PCM. I used the plug from my no-longer-needed O2 sim. I hooked the Analog Output #2 of the LM-1 to the PCM input wire (Purple) and the ground to the PCM ground wire (Tan). I then programed the Analog #2 output to scale linierly from 0-1 volts with 0 V = 10:1 and 1 V = 20:1.

Works great. In closed loop it sits right at .465-.475 which equates to 14.7. When I go into PE, it slides right into the .3 range which is 13.0:1. I will do some more detailed logging tommorrow and report back the results.

[jimmyblue]

This is exactly what I'm gonna do, just waiting to get
ahold of a scrap 'vette O2 sensor so I can solder up the
pigtail and plug it right in.

[arthansen]

What ever you do, don't hook up the ground wire from the LM-1 to one of the heater wires on the O2 plug. You might just blow a fuse, or so I am told. :P

[97GTP]

I've been told that the wide band has to be hooked up pre-cat. Is this true? I wasnt sure because when you get dyno'd they just "throw it up her tail pipe"

[arthansen]

In order to get accurate readings, it should be "Pre-Cat". I believe that many do just put it up the tail pipe and then make corrections based on known Cat performance.

However, if you don't have a Cat....

[97GTP]

Thanks