Do I need O2 extnensions?
Thread Starter
Launching!
Joined: Mar 2008
Posts: 274
Likes: 7
From: Omaha, NE
Do I need O2 extnensions? Just like the title says. I did a search but didnt find anything concrete. I am buying pacesetter longtubes and ORY today and was wondering if i need to dish out $40 for O2 extensions. I have heard of some people tuning out the rear O2 sensors completely. If i deleted the rear O2s does that mean that I would not need the extensions? Im just trying not to waste money.
You need the o2 extensions for the front.
Not sure what lengths.
I recently did my header install, and I swapped out some pins on the PCM. So, now the pcm sees the rear o2 connections as front o2s
Not sure what lengths.
I recently did my header install, and I swapped out some pins on the PCM. So, now the pcm sees the rear o2 connections as front o2s
Assuming its for your 98. Heres a link on how he went about doing the pin swap.
https://ls1tech.com/forums/pcm-diagn...front-o2s.html
Here is the setup of how your pcm is wired.
http://www.ls2.com/boggs/torques/98pinpcm.htm
Its like a 5 minute job.
o2 extensions wont be necessary if you do this. Since the rear o2 connections are near the o2 bungs on your LT headers.
https://ls1tech.com/forums/pcm-diagn...front-o2s.html
Here is the setup of how your pcm is wired.
http://www.ls2.com/boggs/torques/98pinpcm.htm
Its like a 5 minute job.
o2 extensions wont be necessary if you do this. Since the rear o2 connections are near the o2 bungs on your LT headers.
TECH Apprentice
Joined: May 2004
Posts: 318
Likes: 13
From: Chicago, IL
I just bought Pacesetter/TSP Y combo from TSP and it says that it comes with "wire to manually extend the front O2 sensor via cutting and splicing." I don't know how hard this is, but I'm definitely going to give the Rear O2 conversion a try.
Don't forget to go by the year of your car. I know from 98 to 99, the wiring changed.
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Verdad Gallardo TECH Apprentice
Joined: May 2004
Posts: 318
Likes: 13
From: Chicago, IL
Assuming its for your 98. Heres a link on how he went about doing the pin swap.
https://ls1tech.com/forums/pcm-diagn...front-o2s.html
Here is the setup of how your pcm is wired.
http://www.ls2.com/boggs/torques/98pinpcm.htm
Its like a 5 minute job.
o2 extensions wont be necessary if you do this. Since the rear o2 connections are near the o2 bungs on your LT headers.
https://ls1tech.com/forums/pcm-diagn...front-o2s.html
Here is the setup of how your pcm is wired.
http://www.ls2.com/boggs/torques/98pinpcm.htm
Its like a 5 minute job.
o2 extensions wont be necessary if you do this. Since the rear o2 connections are near the o2 bungs on your LT headers.
Im not sure how different your car is from mine, but my wiring harness for the rear o2s were at the tailshaft of the tranny...AKA nowhere ****** close to the collectors LOL
TECH Enthusiast
Joined: Aug 2006
Posts: 734
Likes: 2
From: Hamlin ny
i just did my headers this past weekend. i got the bosch 3111 oxygen sensors and havent had any probems and they are plenty long i had to actually zip tie some of it cause they were so long. as for the rear o2's you can jus have them tuned out if you get a dyno tune thats what im doing.
