Do I need to adjust the timing when I install Pulstar® plugs?
No. Pulstar® plugs are designed and tested to be direct replacements for spark plugs. If your vehicle has an engine control unit (ECU or computer) we recommend that the negative cable be removed from the battery during installation so that it will reset and recognize the improved ignition performance and adjust for maximum benefit as soon as practical. Even if the computer is not reset, after a couple of tanks of fuel (or a few hundred miles of driving) the computer will recognize the improvement and adjust accordingly.