I recently installed a agency exhaust Now im getting after cat cel on both sides anyone else experience this and have a fix? Do they make 02 extension?

 

Probably cause of the 100 cel cats, just flash your ecu

 

HI,A few places sell those O2 extenders, like FVD..

 

Will the extensions fix the cel if so that would be by far the cheapest option? What tune should i get and which tune is the cheapest? i have a bunch of things id like to do before spending on a tune, mostly suspension. So if i did get one i probably wouldnt want to spend more than maybe $1000

 

Try Extensions first,,cheapest cure and most of the time they work.....
But a tune would make you car more fun..

 

Ill pm you right now a price for extensions.
They are the best "quick fix"
Guaranteed fix would be going with a flash.

 

so serious question who offers the best deal on a tune? The car already has way enough power so im really only doing this becuase i think extensions are probably pretty hit or miss in terms of fixing the error.

 

honestly you should never skimp on a tune....

 

At your level, there are several good choices and good prices..
Good Luck.

 

my car has a giac tune and wasnt impressed with it. i decided to go with tony@ epl for my next tune

 

In case you're looking for a very high quality set of O2 extensions, check out EBWerks. Enrique sold me a set of those only, and they were extremely well made and reasonably priced too. I have a set of FVD short extenders that cost about 3x as much!!!!

 

We have stainless steel 02 extenders available...

 

I've got the long extenders on mine(x-pipe) and am still getting the p0420/p0430 codes. any suggestions?

 

I still get them too Schwolneck, but not with regularity. I can go quite a few drives in between seeing them. For my case, I just plan a re-flash to remove the rear O2 sensor checks to be done with it. I've seen that there are some different (longer) 90 degree units also available to act as extenders, but I have no personal experience with them. Might be worth a shot if you want to live on with your current tune?

 

I decided to have my tuner fix the problem. Was concerned that even if the cats are able to pass the sniffer test for smog, that they would still fail me for having extenders on the O2 sensor.