Wideband O2

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340inabbody said:
Yeah I have the LM1 as well. Originally for the tail-pipe but I didn’t think that was a very accurate way to measure.
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Sensor has to be deep in the tailpipe to get it away from any free air pulses.

As long as it's in the dirty air of the exhaust, preferably closer to the engine, it will read O2 content in stream. Check out where sensors are in new cars. Front ones are anywhere before the cat. If placement made a difference, the OEMs would be all over it. Collector, pipe right after reducer, won't make any difference with that placement.
 
Ok so I am new to wide band O2 measurements and using them to tune. Motor. Seems like I would need two channels for my duel exhaust set up. Right? Or at least two bungs one right one left for each side, then swap plug and sensor?
 
Leaded race fuel only, never had one die. I replace it every couple of years, just for piece of mind. Have run one for 8 years? Actually, I have one start to flake out.
 
furrystump said:
Leaded race fuel only, never had one die. I replace it every couple of years, just for piece of mind. Have run one for 8 years? Actually, I have one start to flake out.
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Yeah, leaded fuel can slow them down but using non sensor safe sealers will kill them dead PDQ.

Don’t ask how I know that. In fact, I have two new O2 sensors sitting on my desk to replace one I killed and I’ll use the other one as a decent backup.
 
340inabbody said:
Ok so I am new to wide band O2 measurements and using them to tune. Motor. Seems like I would need two channels for my duel exhaust set up. Right? Or at least two bungs one right one left for each side, then swap plug and sensor?
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Unless you're doing something serious like a highly boosted application you should be fine with one. If you're not good with a welder you can just take the bung to an exhaust shop. Any half competent exhaust guy can add a bung to the collector.

I love using an O2 sensor. Particularly helpful if you're working on setting up a lean cruise mixture, and jetting to achieve proper power ratios under open throttle.
 
Mean416 said:
Unless you're doing something serious like a highly boosted application you should be fine with one. If you're not good with a welder you can just take the bung to an exhaust shop. Any half competent exhaust guy can add a bung to the collector.

I love using an O2 sensor. Particularly helpful if you're working on setting up a lean cruise mixture, and jetting to achieve proper power ratios under open throttle.
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Is Tig welding it the best only way to go or can I mig it? I am pretty good with my mig with sheet metal and bodywork. But I don’t have tig….unless Santa brings me one. Last year I got coal….
 
Tig it. Just realized that I meant mig it.
Sorry.
 
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I mean...as usual it depends. I'd mig and not think twice . Some people are super picky and tig everything so....
 
Ironmike said:
6 o'clock? If you're talking about on the bottom, that is a hard NO! Never want the sensor to lay where condensation may collect. Now basically ANY position except 6.

I welded mine in the passenger side of my TTI's at about 9 oclock, looking into the header. No prob. 15 minutes.
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agree on the 6 o'clock being WRONG , 10 to 2 is the best location , other than straight up , which is probably impossible on most cars ...
 
famous bob said:
agree on the 6 o'clock being WRONG , 10 to 2 is the best location , other than straight up , which is probably impossible on most cars ...
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Hey bob, you're way behind buddy. See post #14.

I do the same thing all the time.:BangHead:
 
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