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i have a 01 lx with ex head, vafc2, racing header w/ header wrap, mild port and polish, decked the head some, and now my car is throwing o2 sensor codes. wondering if anyone knows where to get o2 dummy or simulators. if not then how i can trick the ecu to thinking its running right?

 
Rep Power: 242

almost anywhere....

try www.dezod.com

www.procivic.com

there is a DIY for making a defouler here too I think. I personally would have just gotten a shorty header with a high flow cat downpipe so I could still pass inspection....but thats just me.

Well speaking of, you could take it to a muffler shop, buy a proper sized high flow cat and have them weld in the bungs and extend the wires....problem solved and you can still drive it legally with the race header. Good luck

 
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thanks i just recently started looking for the dummy o2s but it had the bungs already and i tried the defouler and still threw codes so i am just going to eliminate them all together.

 
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i use a MIL eliminator from eBay (obvious on the 2nd O2 sensor). some 4 years and no problems.

 
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Never mention if you remove the cat. If you still have a the cat converter, then you should look for problem and fixing...

 
Rep Power: 254

^^ race header usually implies a cat delete.

you can just extend the O2 sensor out about 3 inches out of the exhaust flow in the exhaust. thats what i did, worked like a charm.