I called Summit Racing just to buy and replace an o2 simulator and they told me that the dont work with o2 sim anymore. Any speedshop or recommendation would be appreciated and thanks in advanced.

 

Anyone that openly sells them is taking a big risk. The Feds cracked down on it (fining people), so that is why you don't find them any more. Have them programmed out.

 

Or replace it with a high flow catalytic converter i guess because i eliminated the cat in favor of a long tubes.

 

If i understand correctly you can still throw a code even with high flow cats. At least that's how my Ls1 engine was. Get them tuned out and benefit from a tune

Check ws6store.com ? last place i remember seeing them within a years time still selling them, some places will sell them strictly for "offroad" purpose only, last i knew. Just like headers LOL