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10-04-2015, 08:51 PM
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#2 |
  Drives: 2007 yaris 3 door Join Date: Sep 2015
Location: Denver, Colorado
Posts: 1,000
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a secondary o2 simulator sends a signal to the ecu about once every second at the correct voltage for a clean catalyst. a spacer just moves the o2 sensor away from the path. I don't know why you'd do this. if you remove catalyst an incorrect signal will be sent to the ecu tripping a cel. you should not remove your catalyst unless you are using car for racing only. you will only gain about 1-2 hp, but can incur a $10,000 epa fine if it is discovered it has been removed. FEDERAL LAW (idk about PR)
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