freeic,

We recommend heat cycling the engine for break in by idling the apx 4-5 tanks. In between tanks we recommend allowing the engine to cool down to room temperature. Also, just after running each tank make sure that the piston is at BDC, Bottom Dead Center. In other words, at the bottom of the sleeve.

After 4-5 tanks at idle with the above process, you can begin driving the vehicle and tuning it.