Wiring up an LC1
12-10-2007, 07:33 PM
#61
iirc you should never have it in the exhaust unpowered.
Quoted from teh back of the LC-1 Quickstart guide
Quoted from teh back of the LC-1 Quickstart guide
When installed in the exhaust, the oxygen sensor MUST be connected and operating with the LC-1 whenever the car is running. An unpowered oxygen sensor will be quickly damaged when exposed to hot exhaust gases.
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12-10-2007, 07:36 PM
#62
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WHEN INSTALLED IN THE EXHAUST, THE OXYGEN SENSOR MUST BE CONNECTED AND OPERATING WITH THE LC-1 WHENEVER THE CAR IS RUNNING. AN UN-POWERED OXYGEN SENSOR WILL BE DAMAGED WHEN EXPOSED TO EXHAUST GAS.(edit) damn, Bryceness beat me to it.
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12-10-2007, 07:57 PM
#64
Well, when I get mine, I guess I won't do that. :-)
I will say that if it's been getting damaged, it's not been happening quickly. I've had the same sensor in there for at least a year or two and it seems to work fine. I don't know who makes it or anything. But it's probably in the back bung, now that I'm thinking about it.
I will say that if it's been getting damaged, it's not been happening quickly. I've had the same sensor in there for at least a year or two and it seems to work fine. I don't know who makes it or anything. But it's probably in the back bung, now that I'm thinking about it.
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12-10-2007, 07:59 PM
#65
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If water can't collect on the sensor, and it's in a location where it gets heated enough to burn the gunk off (but not so close it overheats), I'd bet that leaving it in unpowered isn't too detrimental.
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12-10-2007, 10:43 PM
#67
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Actually it's more than just a little heat; they get pretty warm. o2 sensors are heated so that they give reliable readings. they can skew their reading based on temp. I've seen graphs on the internet that show temp vs output error. google probably can bring them up.
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12-11-2007, 12:43 PM
#71
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Is there any detriment besides sensor life to running the wideband in the stock location, vs. further downstream on the downpipe? I just pulled my stock NB out and put the WB in its place.
Also, where is everyone grounding their LC-1? I am going to move it to the throttle body ECU grounds, but for now it's grounded (along with the rest of my gauges) below the stereo, directly to the body.
Also, where is everyone grounding their LC-1? I am going to move it to the throttle body ECU grounds, but for now it's grounded (along with the rest of my gauges) below the stereo, directly to the body.
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12-11-2007, 12:54 PM
#72
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Is there any detriment besides sensor life to running the wideband in the stock location, vs. further downstream on the downpipe? I just pulled my stock NB out and put the WB in its place.
Also, where is everyone grounding their LC-1? I am going to move it to the throttle body ECU grounds, but for now it's grounded (along with the rest of my gauges) below the stereo, directly to the body.
Also, where is everyone grounding their LC-1? I am going to move it to the throttle body ECU grounds, but for now it's grounded (along with the rest of my gauges) below the stereo, directly to the body.
As for grounding? I have mine grounded to the block at the steel braided cable on the drivers side along with an MS ground at that point as well.
I don't plan to ground my gauges there though, they should be fine with a regular old ground anywhere else.
Btw. Where did you mount your LC1 Controller? I am guessing your cable comes up through the shifter boot?
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12-11-2007, 01:01 PM
#73
It's more of a pain to get to, but you could pull the wire up though the stock 2nd O2 sensor local, the side of the tranny tunnel.
Sorry, after spending a month in mexico in a diesel project car with a busted turbo-header and an ill-fitting shifterboot (and rich maps), I'm against messing with the shift boot.
Sorry, after spending a month in mexico in a diesel project car with a busted turbo-header and an ill-fitting shifterboot (and rich maps), I'm against messing with the shift boot.
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12-11-2007, 07:51 PM
#74
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The excess heat from the turbo throws the readings off, as well as its not designed to work in temperatures over 900C according to the manual. Why would you bring it up to the stock location if you have a bung at the end of the DP anyway?
As for grounding? I have mine grounded to the block at the steel braided cable on the drivers side along with an MS ground at that point as well.
I don't plan to ground my gauges there though, they should be fine with a regular old ground anywhere else.
Btw. Where did you mount your LC1 Controller? I am guessing your cable comes up through the shifter boot?
As for grounding? I have mine grounded to the block at the steel braided cable on the drivers side along with an MS ground at that point as well.
I don't plan to ground my gauges there though, they should be fine with a regular old ground anywhere else.
Btw. Where did you mount your LC1 Controller? I am guessing your cable comes up through the shifter boot?
My controller is in the engine bay, next to the left shock tower, ziptied to a bracket I scavenged from some fancy system I ripped out of my once fully-loaded Miata. 
as seen in this photo:
Last edited by Savington; 12-12-2007 at 12:17 AM.
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12-12-2007, 03:28 PM
#79
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Btw. That O2 sim you have, thats for the secondary O2 sensor yes?
I am planning to keep both sensors in place after my install, so it shouldnt matter to me really.
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12-12-2007, 03:50 PM
#80
I missed the link. I just looked at the site you posted, but found no pics of the hole in the tranny tunnel.
Btw. That O2 sim you have, thats for the secondary O2 sensor yes?
I am planning to keep both sensors in place after my install, so it shouldnt matter to me really.
Btw. That O2 sim you have, thats for the secondary O2 sensor yes?
I am planning to keep both sensors in place after my install, so it shouldnt matter to me really.
Why would you keep the OEM sensor? Ok, $50 for the simulator is a bit spendy, but I figure instead of continually buying new sensors, I could buy that once, and it's worked out for me. Of course, as soon as you upgrade to a high-flow (or hollow) cat, the computer will throw CEL lights and it will be all that sensors fault.
Personally, I'd say with an aftermarket ECU you might as well scrap the whole O2 monitoring set up, and if you're not going to, I'd get the WB to share a signal with your OEM computer, and use an O2Sim to avoid the CEL. It comes out clean and when it's done you'll never need to do it again. If I was smart, I'd sell you mine. :-)
[edit] that is basically under the driver's seat
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