[kokeyed]

I have a ss/t that i would like to put dual exhaust on. I have already purchased pacesetter longtubes my plan is to buy a h pipe and a dual inlet dual outlet muffler. my question is where should i put the o2 sensors i do not plan on running any cats. also should i go with 2.5 or 3" pipe. future plans include a hughes airgap intake, throttle body, and a sct. later down the road hopefully some headwork and cam but that will be awhile. let me know what u think? heres the muffler im looking at

http://www.amazon.com/Flowmaster-952...193186-0356855

 

[silverstreak88]

If your going to be some engine mods you might as well run 3" all the way and as far as you sensors go just look before you take it down to see where it is and drill a hole in your pipe. You will have to get the adapter welded on for it to thread onto unless you have one it is farely easy to do. I am not sure if it is going to throw any check engine light codes for running no cats.

 

[kokeyed]

i ordered my headers with the bung for 02 sensor but have heard alot about putting it in the x or h pipe.

 

[TerrysRam]

In my old '01 and '99 I removed the cats and had an O2 simulator put in place of the oxygen sensor. This was to avoid throwing a code.

 

[kokeyed]

was that for both sensors? or just the rear one. wheres the best place for the front one off the one header or in the h pipe?

 

[TerrysRam]

Sorry I can't remember. My exhaust guy did it for me. I know for sure the back one.... Pretty sure the front too.

 

[Brutus]

you need your front O2's for the PCM. the rear(s) are what you sim. the rear O2 is usually after the cat. you can just zip tie that sensor to the frame rail (depending on you O2 configurations) i did this on my 2000 5.9 Durango when i had the cat removed. worked just fine for over 3 years, and counting.