readiness monitors

  1. cheeser

    Intermittent issues after VMP Stage 1 install - limp mode and P219A code

    Finished install last week without issue. Drove to work and such for three days without issue...about 75 miles. Beyond Supercharger, engine is stock except GT500 mufflers. Drove car about 175 miles to Steamboat Spring and when coming over a 9400ish foot pass, wrench icon popped up and went...
  2. S

    2011 Mustang GT readiness monitors

    I have a 2011 Mustang GT with a BBK X pipe with high flow cats, resonator delete and a roush axleback exhaust. Stock other than suspension and brakes. However when taking my car to get a Missouri emissions it is showing the o2 and o2 heater monitors are not complete. I have done multiple drive...