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Hey There,

Alright I am trying to desperately pass emissions and I couldnt even do the test at first cause there was nothing but smoke coming out! Anyhow I replaced the O2 Sensor on Bank 1 Sensor 1 cause I had a code popping up for that. then I proceeded to run some Seafoam through the Intake and through the gas tank. Cleared all codesm ran 100kms and then the codes, P0420, P0430 and P1443 come up.

I had two cats replaced in the front not too too long ago, and the 1st one is hallowed out. Do I now have to shove a new cat in the spot of the 1st cat?
 

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You can't have an empty or hollow cat in between the two oxygen sensors or you will get either P0420 (Bank 1, passenger side) or P0430 (Bank 2, driver side). A tune can disable the rear oxygen sensors to circumvent this, or simulators may be installed in place of the sensors.

P1443 has been covered all over this place. Search in the General Tech or engine forums and you'll find pictures, instructions, and anything else you need.
 
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