Are they difficult to install? How will I know when they need to be replaced? Where is the best place to purchase them?

Mike

 

Do you have a SES/CODE....if not..why change..mine are 8 years old..

 

No codes....I noticed that when I'm at a stop sign the car tends to idle rough (not all the time) It feels like the car is not getting the right amount of gas.

Mike

 

the o2 sims don't have anything to do with how your car runs. they replace the rear o2 sensors that only give feedback to the computer. The front o2 sensors do affect the way your car will run. Both are easy to change out. You can get the sims at texas speed or thunder racing, I think. O2 sensors can be picked up at any local auto parts store for around $50.

 

Cool Thanks

 

Correct, all your sims do is counteract the SES light and have no affect on A/F mixture. I would check all of your plugs/wires and check the front O2's also.

 

I read that the gov (EPA?) shut down and fined the company that was manufacturing the sims. They'll be hard to find at this point and they are of no help in the front position anyways.

 

 

http://www.epa.gov/oecaerth/resource...aa/casper.html

Casper's Electronics Inc. Clean Air Act Settlement
WASHINGTON - The Department of Justice and U.S. Environmental Protection Agency (EPA) announced today a landmark settlement requiring Casper's Electronics, of Mundelein, Ill., to pay a penalty and stop selling devices that allow cars to release excess levels of pollution into the environment, in violation of the Clean Air Act (CAA).

Today's settlement, the first of its kind, requires Casper's to stop selling electronic devices-known as oxygen sensor simulators or "O2 Sims"-recall the devices, and pay more than $74,000 in civil penalties to the United States. An O2 Sim tricks an automobile engine's computer into sensing a properly functioning emission control system, even when the catalytic converter is missing or faulty. These "after-market" sensors are considered illegal "defeat devices" under the federal CAA.

Casper's has sold approximately 44,000 defeat devices through retailers and from its Web site since 2001. The EPA estimates that the increased emissions from installation of these devices over the life of the vehicles are 7,400 tons of hydrocarbons, 347,000 tons of carbon monoxide, and 6,000 tons of nitrogen oxides. This is equivalent to the emissions produced by a half-million cars with fully operational emission control systems over their lifetimes.

"Reliable and effective automobile pollution control systems are essential to protect human health and the environment from harmful automobile emissions," said Granta Nakayama, the EPA's Assistant Administrator for enforcement and compliance assurance. " Casper 's sale of the oxygen sensor simulator defeat devices over a multi-year period is a serious violation because it facilitated the removal or malfunctioning of motor vehicle catalytic converters, which are the primary emission controls devices to prevent excessive pollution from cars and trucks."

 

just have them tuned out

 

Ttttt

 

ttttttttt

 

+1 on tuning them out.. it's cheaper and you never have to worry about em again
though if it's the front o2s you're having trouble with I would just go with the better corvette o2s

 

My car was rough at idle too, I removed the throttle body (easy) cleaned it with tb cleaner and cleaned the mass air flow sensor with CRC MAF Cleaner. The car idles great and stronger, it was actually causing my battery to slowly run down in heavy traffic. Give it a try, its a cheap and easy fix.

 

I found the problem.....I had an exhaust leak

 

WS6store still carries the O2 sims

 

glad my car came with the sims.

 

ok my o2s are tuned out......got a set of sims for sale....

 

i pulled unplugged my front o2's and ive no problems idling or running or anything. i do have a SES code. but no problem with performance at all.

 

I have a set of simulators that I can sell if someone wants em....