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catalyst

  1. R

    Exhaust issues, please help

    Hello everyone, I’m a new member to the forum. I have a 2000 Explorer XLT ohv 4.0 . I have 1 week left to renew my plates and I’ve currently got gutless cats . I went and bought two off of a 98 yesterday but the system was different from mine. I had to purchase them because it’s the best option...
  2. N

    3rd Gen Catalytic Convertor

    Hey guys, just wondering has anybody removed the secondary Cat from the exhaust of your 4.6 explorer? The big cat. Did it have any good or bad gains mileage, engine codes, exhaust note and so on? My cat is stuffed and im thinking about getting rid of it all together but before I do I want to...
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