catalytic converters

  1. LongTom

    Terrible 5.7L 2500 MPG

    Had an engine code for a P0420. Took out cats and put in anti-fowlers. No engine light so far, but have noticed my fuel economy is absolutely terrible. Was bad before and now seems a little worse. It’s a 2011 Ram 2500 5.7L crew cab longbox 4x4 with 3:73’s and stock tires. I drive it like a...
  2. LongTom

    2011 Ram 2500 5.7L Poor Performance

    Hello everyone, I recently purchased a 2011 Ram 2500 5.7L 4x4 Crewcab Longbox with I believe 3:73's a few weeks ago. Truck has an engine code (P0420) for catalyst efficiency below threshold on bank 1. Truck feels a little underpowered for 390 HP and If i am absaloutley driving like a grandma at...
    • LongTom
    • Thread
    • 2500 2500 5.7 catalytic converters engine codes exhaust fuel economy hemi hemi 5.7 mpg power
    • Replies: 2
    • Forum: Engine & Performance
  3. LongTom

    2011 Ram 2500 5.7L Poor Performance

    Hello everyone, I recently purchased a 2011 Ram 2500 5.7L 4x4 Crewcab Longbox with I believe 3:73's a few weeks ago. Truck has an engine code (P0420) for catalyst efficiency below threshold on bank 1. Truck feels a little underpowered for 390 HP and If i am absaloutley driving like a grandma at...
    • LongTom
    • Thread
    • 2500 2500 5.7 catalytic converters engine codes exhaust fuel economy hemi hemi 5.7 mpg power
    • Replies: 10
    • Forum: Engine & Performance
  4. H

    Catalytic Converter Delete

    I have a 2012 1500 and I was told that there is no possible way to remove the catalytic converters without forever throwing a code. Is this true and if not (fingers crossed) how would I go about that?
    • Hemi_Orange
    • Thread
    • 5.7 hemi tuner catalytic converters exhaust exhaust kit hemi 5.7 hemi mods hemi powered ram ram 1500 ram classic
    • Replies: 5
    • Forum: Engine & Performance
  5. S

    Long tube headers, but need cats

    I recently acquired a 2012 ram 1500 W/5.7 Hemi. I’ve discovered it has long tube headers but no cats. I’m not 100% sure what I’m getting into here because it seems like it’s been tuned or reprogrammed. There’s no cats and no check engine light although a dealers scan tool can find codes for...
  6. UnicornBeastOwner

    Exhaust 250p 1998 10 magnum

    Looking for information or pictures on the dodge ram 98 magnums exhaust system. My cats are clogged and cant find diagrams or hangers that match the ones under mine. It goes from two pipes to one big log type pipe and smaller out the back. I have to remove mine and the hangers are all rusted and...

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