Header issues...help please
Thread Starter
Racer
Joined: Oct 2002
Posts: 494
Likes: 0
From: Victoria BC
Header issues...help please
I bought the LT EM headers with the extension pieces to go with my corsa exhaust and random cats. The headers fit nice but they are lapping the cats 
Now I'm in a bind.
I have 3 o2 sensors; one on each header and one on the cat on the passenger side. The easiest solution is to remove the cats but I'm not sure what not having that o2 sensor in the cat will do.
My question is have you guys from the group purchase come accross this? What should I do? Thanks
Now I'm in a bind. I have 3 o2 sensors; one on each header and one on the cat on the passenger side. The easiest solution is to remove the cats but I'm not sure what not having that o2 sensor in the cat will do.
My question is have you guys from the group purchase come accross this? What should I do? Thanks
Team Owner
Joined: Sep 2003
Posts: 25,295
Likes: 4
From: I'm the walkin dude I can see all of the world...
St. Jude Donor '03
You can run w/o cats just fine with a 94. The rear O2 doesn't look for cats or not. You can either discaonnect it or keep it w/o the cats. Either way it won't throw a code. 
Safety Car
Joined: Sep 2002
Posts: 4,030
Likes: 6
From: Maryland
Originally Posted by jodyeastman
My question is have you guys from the group purchase come accross this? Thanks
Would like to see the resolution to this. From what I've seen, your best option is to weld the cats right onto the header and have a shop custom fab the "extensions" from cat to cat-back. That is my plan. I thought the EM extensions were a bit over priced, as according to them you have to do some "cutting" anyway to make them fit.
Thread Starter
Racer
Joined: Oct 2002
Posts: 494
Likes: 0
From: Victoria BC
Originally Posted by sothpaw2
I thought the EM extensions were a bit over priced, as according to them you have to do some "cutting" anyway to make them fit.
It looks like the extensions are out by 3" on one side anyway.
Race Director
Joined: Aug 2003
Posts: 11,043
Likes: 3
From: San Jose Pat Tillman - American Hero
Originally Posted by jodyeastman
I bought the LT EM headers with the extension pieces to go with my corsa exhaust and random cats. The headers fit nice but they are lapping the cats Now I'm in a bind.
I have 3 o2 sensors; one on each header and one on the cat on the passenger side. The easiest solution is to remove the cats but I'm not sure what not having that o2 sensor in the cat will do.
My question is have you guys from the group purchase come accross this? What should I do? Thanks
Now I'm in a bind. I have 3 o2 sensors; one on each header and one on the cat on the passenger side. The easiest solution is to remove the cats but I'm not sure what not having that o2 sensor in the cat will do.
My question is have you guys from the group purchase come accross this? What should I do? Thanks
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Race Director
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Originally Posted by sothpaw2
From what I've seen, your best option is to weld the cats right onto the header and have a shop custom fab the "extensions" from cat to cat-back. That is my plan. I thought the EM extensions were a bit over priced, as according to them you have to do some "cutting" anyway to make them fit.
Safety Car
Joined: Sep 2002
Posts: 4,030
Likes: 6
From: Maryland
Originally Posted by STL94LT1
I slid my cats on over the header collectors, and clamped them. Also had Midas narrow the cat-back, and make connecting extensions with one o2 bung on the right side. Midas charged me around $130 for the alterations.
Sorry, I forgot, I thought you welded yours. My bad. You have the best idea going.
