Please help do I need 02 sims for my exhaust?
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Joined: May 2003
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Re: Please help do I need 02 sims for my exhaust?
Sims are needed only for the rear O2s and then only if the cats are damaged or removed. It prevents the PCM from kicking out a cat efficiency code. Sims are not used in the front O2 location since the PCM uses them for engine control.
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Joined: Feb 2005
Posts: 143
Re: Please help do I need 02 sims for my exhaust?
Originally Posted by slopokrodrigez
Sims are needed only for the rear O2s and then only if the cats are damaged or removed. It prevents the PCM from kicking out a cat efficiency code. Sims are not used in the front O2 location since the PCM uses them for engine control.
The headers I have, have o2 bunges on heach header, can I put both o2 sensors one in each header?
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Joined: Aug 1999
Posts: 139
From: Mililani, HI
Re: Please help do I need 02 sims for my exhaust?
You have four sensors, two of which will go into the bungs and two that go in after the cats. If you are removing your catalytic converters, you will need either O2 sims or have your rear sensors programed out of your pcm.
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