R50/R53 :: Hatch Talk (2002-2006) Cooper (R50) and Cooper S (R53) hatchback discussion.

R50/53 Catless exhaust error code fix

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Old Dec 4, 2017 | 06:21 AM
  #1  
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speedman
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Catless exhaust error code fix

I have installed a catless down pipe to my MCS and I cannot get rid of the O2 error code. How do i fix this problem
 
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Old Dec 5, 2017 | 03:09 PM
  #2  
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Whine not Walnuts
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From: Fuquay Varina, NC
Catless downpipes are turbo whereas us Gen1s are supercharged. If you do have a turbo, suggest you post in the Gen2 section.
 
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Old Dec 12, 2017 | 11:13 AM
  #3  
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From: Clawson, MI
You need to tune the car, and have the secondary o2 sensor tuned out.

Spacers and simulators don't work, you'll have a CEL return at some point in the near future.
 
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Old Dec 14, 2017 | 05:29 AM
  #4  
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I use a spacer with a catalytic converter in it, because I'm too lazy to get a bung installed after my highflow cat
 
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