02 sensor

**lewisb13** · 11-05-2009, 08:31 AM

I have an 04 2500 HD. Do this thing have an O2 sensor after the cat? I guess Im asking because Id like to get an exhaust that doesnt have a catalytic converter and I dont want the damn thing throwing codes. Thanks in advance the help I have recieved on here has been invaluable.

**wreckedthenbuilt95** · 11-05-2009, 09:58 AM

is it the 6.0 or the duramax if you run with out a cat after 95 it will screw up the fuel system youll run too rich and after awhile itll mess up

**lewisb13** · 11-06-2009, 09:41 AM

Its the 6.0. Thanks for the info!

**vncj96** · 11-06-2009, 10:29 AM

you can get a custom tune and have it deleted, but if you have to have inspections done obviously you will get nailed

**wreckedthenbuilt95** · 11-06-2009, 11:46 AM

the tbi can run fine with out a cat but it wont pass emissions i got more power and better gas mileage i live in tyler dallas is 2 hours away about 100 miles from here i filled up before i left tyler and got to my hotel right after it came off the full mark i got such kick ass mileage lol

**Bluewater** · 11-06-2009, 12:36 PM

Do you realize it is a federal offence to alter or tamper with the 02 sensor or the cat. converter? might want to think it thru. Not trying to be a downer. Just some FYI..

**lewisb13** · 11-06-2009, 01:40 PM

Yeah we dont have emissions in my neck of the woods. This will also be the first vehicle that Ive owned in my whole life where I might actually KEEP the cats. Thanks for the comments, I was just wondering if there was an o2 sensor after the cat. There shouldnt be anything else affected by removing the cats.