I have been searching around and nobody makes O2 sims yet i called casper electronics, and nothing, am i missing something, or is it really that nobody makes them yet.

It seems that nobody does
I was thinking of getting the Random Tech mid pipes, but when I searched the topic some members still get engine codes. Here in NJ they smog check every two years to see if all of your obd-II systems are functioning properly. You would fail if the rear O2's were "programed out" or so I have been told

My 95 Impala ss w/stock manifolds no cats "export pipes" and flowmaster exhaust was almost nascar loud ! :hail: So I am having a hard time dealing w/the GTO so quite even w/the flowmaster cat back.

 

Give Stainless Works a call. They might have a line on a source for them.

 

Just because they don't have anything where the plugs match up isn't that big a problem. Just about any O2 sim will work if you get the wires right and load the heater circuit. FWIW, I've been running LT's w/ RT cats since September and no codes so far.

 

Aside from buying them used, they are no longer sold new.

Your only option is to have them properly tuned out with a tuning program such as LS1/2Edit or HPTuners. You won't have any problems passing the OBDII scan test if it's done properly. We've been doing it here for years. I've tuned them out on my Camaro and passed twice already. The scan test is really painless and easy to pass with a programmer!

 

Funny, I happen to have a brand new one in a box, except it is no good since it is only one. Darn shame. (I got it for my Honda years ago but never even used it.)

What do you mean O2 sims arent sold anymore?

 

check here:
http://speed-eng.com/store/product_info.php?cPath=25_101_1264&products_id=4374

Not sure if they'll plug right into a the GTO but you should be able to get them to work.

 

Ever since my LTs went in w/ hi-flo cats, my CEL has gone on. It can be programmed out, but re-appears after 20-30 miles. Dealer sez the code is failed cat. The tuner sez he de-programmed the rear O2s. ROK doesn't have this problem. WTF? Any suggestions?

 

Speed carrys them again. For awhile there I couldn't get a pair from them when I was running cat-less.

 

http://www.pfyc.com/store/merchant....en=PROD&Store_Code=PFYC&Product_Code=VT5011&Product_Count=6&Category_Code=VTEXH

$89.99

seems like they still sell them. why would they stop?

 

Speed engineering has them, i just ordered a set a few weeks ago, to compliment my SW LT's with off road pipes.

 

Aside from the connectors being flat in the rear - the caspers style sims will not work on a 04+ car. We have another style sim that will be in the testing phase shortly, one that simulates the wave of readings that the sensor should be seeing.