Quote:
Originally Posted by renfield90
People have been reporting their OFT stage 2 tunes (with P0420 disabled) can get all readiness checks to pass. It shouldn't be necessary to reenable that code and add a defouler; if people can't get all their readiness checks passing after a sufficient number of drive cycles then they may have other issues. I'm not aware of the specifics but there is more than one reason why a readiness check can fail.
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its possible if the ecu sees data from the two 02 sensors that is close enough to the stock readings it expects.
its more dependant on the header than the tune, it depends on the placement of the 02 sensors, some headers the rear o2 is placed in a bung that has a built in spacer almost similar to the openflah header,
generally if the data is out enough to throw a P0420 cel then it wont pass readyness, so regardless of wether you have disabled cel you wont pass readyness as the data is outside what the ecu expects.
yes they check several other systems as well
