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Spacers don’t work and cheap 200 cell cats don’t work for stopping the CEL. Fabspeed or Redstar HJS 200 will but cost $3k. LEIB deleter will also work. Some report that some mini cat O2 spacers worked. I tried some once and they did not work. BM3 works to pass OBD2 plug in for readiness monitors if you can flash a tune. 2019 should be easy to flash. Flashing can void a warranty.
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