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catalytic converters

  1. General E46 Forum
    Hey, I looked around and couldn't find great advice for my situation. My 03' 330ci has an issue with the catalytic converters. Sometimes the CEL comes on, and I've had the codes read, efficiency banks 1 and 2 I believe. Other times, it stays off. It goes on and off every few weeks. I'm in...
  2. General E46 Forum
    Hey guys, I know there are alot of posts about headers but ive done my research and cant find what im looking for. I want to install new ebay headers but as you all now, our headers have the catalytic converter built into them and the ebay headers do not. so I would be running without any cats...
  3. Engine & Performance
    end of sale
  4. Driveline, Engine & DME Tuning
    Hi everyone. So this is what I was thinking. I have a 02 325i. the Cat is going bad (rattling) and I am in need of new ones. I have looked at exhaust options, Headers w/cats, headers w/o cats w/ o2 sims, and oem/ aftermarket manifolds w/cats. I was wondering if anyone has ever tried using m3...
  5. Engine & Performance
    looking for catalytic converters for my 2002 330ci, i need both bank 1 and 2.
  6. Driveline, Engine & DME Tuning
    I'm thinking about using a Rogue IKON on my car, but I do not have any catalytic converters and Rogue told me that it will likely be too loud. Does anyone here have a Rogue IKON on there E46 with no cats that can attest to the volume of the exhaust after the change? I'm not looking to make my...
  7. Engine & Performance
    hey guys hopefully this can get me somewhere:: i need cats. -to keep it simple i just need any section one portion with cats __ i do not care if its custom weld, the brand, tracked, mileage or anything :: as long as they werke well and fit have decently... ____ i want a reasonable offer ~600...
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