02 fault codes

[grimreaper_72]

P0135, 0141, 0155, 0161, have a 03 5 speed with BBK long tubes with BBK off road h-pipe, I have rear O2 eliminators and I've changed the front 2 twice now once with ngk, and Bosch, but no luck, other than a Cai, and the exhaust, its stock what am I missing that I can't get rid of these codes, I have a new set of rear eliminators I'm gonna try, but any other help would be appreciated

 

[Scud2]

Sometimes o2 eliminator don't work. Kinda rare but does happen. Look at the reviews for them.on American muscle.

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[95opal]

P0135, 0141, 0155, 0161, have a 03 5 speed with BBK long tubes with BBK off road h-pipe, I have rear O2 eliminators and I've changed the front 2 twice now once with ngk, and Bosch, but no luck, other than a Cai, and the exhaust, its stock what am I missing that I can't get rid of these codes, I have a new set of rear eliminators I'm gonna try, but any other help would be appreciated

Check your 02 harness for shorts or fauulty grounds. My guess is you melted part of the harness on the exhaust. You can also perform a resistance test.