best placement for O2 WB sensor?
best placement for O2 WB sensor? Got LT's, cats and getting a custom catback made this week so I thought I'd go ahead and throw in the bung while the exhaust guy is workin on it.
Where is the best place to put it on these cars? I'm buying DynoTunes setup with digital gauge for the pillar.
I've thought about 3 places...before the cat, in the Y pipe collector and just over the axle before the split for my duals. Which one would be the best place for the most accurate reading?
Where is the best place to put it on these cars? I'm buying DynoTunes setup with digital gauge for the pillar.
I've thought about 3 places...before the cat, in the Y pipe collector and just over the axle before the split for my duals. Which one would be the best place for the most accurate reading?
I would say before the cats but as close them as you can get. If it is post cat it will change the AFR reading some. I think is is .3 to .5 change. I like knowing what one bank is doing so I can compare the NB sensor with the wb.
Mine sits where my catalytic convertors would be if I had any...I haven't had any heat issues thus far, but if I do, I'll just put a heat sink there. I have access to an infrared temp gun, so I can keep pretty close tabs on it, and it rarely gets very hot (from what I saw it was ~300 *F just pointing it at the exterior casing).
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Originally Posted by FstBlkz28
Why post cat? wouldn't you want it pre-cat so that you know what a/f is actually being burned in the cylinders?
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Ok, I can see after the cats being off...my tuner set my A/F at 12.5-12.8 and the A/F on the dyno was reading 12.8-13.3.
before the cats it is, it should be ok since I have stainless steel LT's.
before the cats it is, it should be ok since I have stainless steel LT's.
Originally Posted by MeentSS02
I was thinking the same thing, but I'll let the internet experts handle this one.
everyone is an expert. put it before the cat, there's a writeup where you can put it where the regular front 02 goes in and have it read like a narrow band along with the WB. but it might be for a different WB, look it up. good luck 
Originally Posted by Screamin_Z
Ok, I can see after the cats being off...my tuner set my A/F at 12.5-12.8 and the A/F on the dyno was reading 12.8-13.3.
before the cats it is, it should be ok since I have stainless steel LT's.
before the cats it is, it should be ok since I have stainless steel LT's.
Originally Posted by Moparnos (The SLP Guy)
damn you and your CCW's J/K
Originally Posted by Doc
Sorry about the controversy. When I said post cats I meant after you throw your cats in the trash can. If you still have to have cats then, place the sensor before them.
Alrighty ... gotcha I'm keepin the cats...at least they are the good metalic ones that Kooks sells with thier Y pipe. Trying to keep some noise down...I don't like most exhaust notes LSx's produce. Can't wait to hear what my custom 3 Bullet catback sounds like next week 
EFILive's LC-1 install instructions say in front of the cats if present, or at least 2-3 feet in front of the exhaust exit. They show the sensor right before the over the axle pipe. Having it further forward would be easier for wiring. Too far forward and I wonder about longevity and heat. Too far back, and I wonder about the readings.