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Old 11-28-2011, 02:30 PM
ejk78 ejk78 is offline
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Join Date: Feb 2011
Location: Chicago
Age: 36
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Vehicle: 2004 Dodge Ram 1500
Color: Gray
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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Question Catalytic Confusion??

Hey guys,
I have an '04 with a few mods,(K&N CAI, Dal exhaust, and long headers). Recently i bought the Superchips Cortex Tuner and uploaded the 87 octane tune, soon after i got the P0420 code for the Catalytic effiecency Bank 1. i only have 68,000 miles on the truck so i wold be suprised if the CATS were bad. Also ive seen pics of the cat converter and it looks nothing like what i have, i have 2 seperate cats(i think).

Would the CATS go bad that fast and have to be replaced? If its the sensors, how do u know which one to replace?


Thanks
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