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Thread: Cat converter

  1. #1
    Join Date
    Oct 2017
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    Cat converter

    Hey fellas, one of my cats went bad and was wondering should I replace with stock ones or go hi-flow, thanks in advance.
    2012 300 SRT8 exhaust, intake, tuned, 180 thermostat, oil catch can
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  2. #2
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    Unless you can find a set of factory’s cheap you might as well look at some high flows. Although it may require a slight tuning change. Not sure though


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  3. #3
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    I have a t1000 tuner, I should be able to use that right?

  4. #4
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    FWIW the high flows I tried flowed less then the OEM cats. Buyer beware!

  5. #5
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    The OEM catalytic convertors are extremely difficult to beat flow-wise. Your engine would have to be pretty darn healthy before the OEM CATs were an issue. Expect to pay significantly more for CATs that actually out-flow the OEM units. CATs, of any type, do not require any sort of tuning
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  6. #6
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    Quote Originally Posted by Hemissary View Post
    The OEM catalytic convertors are extremely difficult to beat flow-wise. Your engine would have to be pretty darn healthy before the OEM CATs were an issue. Expect to pay significantly more for CATs that actually out-flow the OEM units. CATs, of any type, do not require any sort of tuning

    Thanks for all of the good info on the cats, I will be going with factory ones. Again, this is the place to be.

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