My LC-1 Installation Guide

[bmwman91]

Made one quick update to the second wiring diagram: added 1kOhm resistor between LED and ground. Can't believe that I forgot that! Hurr durr...

[einstein57]

Probably. That was a trick we used on after cat 02 sensors when we removed the cats to fool the computer to make it stop throwing CELS back in my vdub days.

[fporro]

I've damaged the screw that served as temporary plug for broken o2 sensor,
muffler shop got it out but bung treads were not usable after that., so they welded a second bung on top of old one, would that be too deep for accuarete lc-1 readings ?

cheerios,

[bradnic]

Check with jaywood

[bmwmaster81]

Hi,

i have got an Innovate MTX-L wideband o2 sensor.

Like this: http://www.innovatemotorsports.com/products/MTXL.php

The difference to the LC-1 is that it has only one ground wire instead oft two like the LC-1.

Can someone tell me how i connect this thing correctly to my e30 ?

Thx

[Pootis]

I use an AEM controller and can't complain. I deleted my stock o2 sensor and use it's 4 pin harness to wire my sensor in. Megasquirt reads the controller perfectly and can tune in failsafes incase the car runs too lean

[jaywood]

I haven't had any trouble with my lc-1 either. I installed it a year or so ago.

[Cyrix2k]

maybe it's just the most popular?

maybe, but I really don't think so. They have a large volume of problems (both known issues/design flaws and outright failures) noted on their own support forum. Pointed searches like "dead AEM wideband" or "dead NGK wideband" don't turn up results while dead LC-1s are rampant.

[nando]

maybe it's just the most popular?

[Cyrix2k]

I've never had a reliability issue with any LC-1 I've had. *shrug*

they seem to be hit or miss, but it's clear they have a much higher failure rate than any other wideband on the market.

[nando]

I've never had a reliability issue with any LC-1 I've had. *shrug*

[Cyrix2k]

I highly recommend staying away from the LC-1 and going with the AEM UEGO instead. The LC-1 has some serious reliability problems and it's unnecessarily complicated to wire. I've now owned two and when they worked, they worked great and read over a wider range than the AEM and I think it was more responsive as well. However, given the reliability problems, I am not willing to give them a third try. The AEM installed in a fraction of the time (VERY simple wiring), really isn't any more expensive these days, and I prefer the gauge layout over the cheap DB gauge option on the innovate. Both my LC-1s were located on the battery tray as well. That's just my 2 cents now that's I've owned in excess of $600 of wideband gear.

[nando]

if it's an M20B25 harness they're the same.

[dirty thirty]

anyone have a write up for a pre 87 wiring harness.

[nando]

Would someone mind elaborating on making it more plug n' play via plugging it into the stock O2 sensor plug? Unless someone gives a good reason not to do it this way its how i'd like to go.

I'm just not a wiring guru.

http://www.megasquirt.325ix.com/MS_to_Motronic/E36_to_E30_O2.html

you still probably want to run the O2 relay off the FP relay (if it's not that way from the factory), and you definitely want to reprogram the error and warmup states.