Hey Guys,

I put LT's on the car a few months ago and it instantly put the CEL on for the rear o2's. I have to get the car smogged soon and but I want to put a cam in this summer so not ready for a full tune. What is the cheapest way to turn off the rear o2's so I can delay getting a tune. Yes this is me being cheap but i really don't want to pay for 2 tunes.

Thanks, David

 

Someone with hp tuners and 100$ will shut it off. An awesome tuner will do it for 50$ my tuner charged me I think 112$ to do it

 

We used spark plug defoulers on Cobalts... It pulls the sensor out of the exhaust steam a bit.

 

The shop by my place does lifetime tunes for vehicle. He said I can install my cam and he will retune my car for free.

 

Which shop do you go to?

 

Call around to different shops and explain your situation. Someone may surprise you with a reasonable offer. Just be glad you're not in Chicago trying to do the same thing.

 

Sounds like a plan thanks guys..

 

If you mail me the PCM I'll do for a really good price.

 

PM sent

 

I did this on my 05V after putting in the highflow cats (truebendz magnaflows or whatever). Works fine.

 

I have longtubes so wonder if it will still work?

 

foulers dont work on our cars..tried that 6 years ago when i first bought the car and headers were the first mod. even trid the diablo tuner and it didnt shut off all the code conditions

 

Did you try this at all? http://www.g8board.com/forums/showthread.php?p=827962

 

I just very clearly stated that it worked with high flow cats.

I think what you mean is that it didn't work for you with no cats at all. I didn't see if the OP has cats or not.

That g8 thread with the filter is interesting. I bet that would work.

 

I have Kooks LT's with High flow cats B&B with the resonator so similar to yours.

 

It would be worth a try. I'd start with the non-foulers and add the filter material if you find that doesn't work. I think the Lt's move them further from the engine so there may be an issue with them not getting up to temperature or something but it's a pretty cheap experiment. Definitely use a step bit and a vise to hold the part you are drilling.

 

It called Advanced Racing Dynamic. I think I paid around $400. I cant remember the correct price.

 

Cool. That's who I go to as well. I think Owen does a pretty good job and I like the fact that he will tune it again for free when needed (already done it a second time for me).

 

Before you do anything you need to see what is the requirement for passing.

If you shut off the rear O2's the drive cycle will never initiate and those tests will flag as "not ready" which is different then a fail.

Those tests are cat eff and vent purge.

This can be addressed in tuning, but there is no way to beat stink test.

Some states (not Calif) will pass you with a not ready indication.

 

Fwiw I'm in PA and the drive cycle requirements let you pass with 4 of the 5 ready flags set. The non foulers on high flow cats with no filter material (like the g8 thread described) passed just fine.

But yeah the specifics vary.