Thank You All! This is what I got back from Thompson BMW's performance team -
Good Morning,
This is Alex the adviser for the performance team. There should be no reason that the active autowerks mid pipe or Remus axle back causes warranty issues. If you decide to go catless that is when you can run into issues if they link a defective part due to being catless or if you cant pass emissions. Thank you in advance.
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Alex McKenzie
Thompson Performance Group
I guess the next question is how are you guys with catless down and mid pipes passing emissions tests?
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