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On my 97 ram i have cat delete with y pipe, my rear o2 sensor is zip ties to frame but still get C.E.L. light, 3" pipe into a flowmaster super 44 and 3" dump about 2 feet in front of rear axel. Exhaust smells pretty rich, and after riding around with other dodges, it feels like my low end is gone. Do you guys think my setup is too free flowing? all i have on motor is cold air intake and 180 t-stat. Thinking about taking it today and installing 2 new o2 sensors and magnaflow cat with 2.5" pipe into a single in dual out magnaflow muffler and 2.25 dual tips out back. What you guys think??
 

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by the way, this truck is not driven hard at all i just want it to be effecient and get best mpg possible.
 

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I like the idea.
But why do you need new o2 sensors?
 

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Discussion Starter #4
the ones in it now are factory with 155k miles.
 

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my rear o2 sensor is zip ties to frame but still get C.E.L. light
Thats why the cel is on! The pcm is not getting any reading from the sensor. If you dont run a cat you need a 02 simulator.
 
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