Your GM Duramax truck can see gains of up to 136 horsepower and 291 ft-lbs of torque with the V3 Pulsar module for 2017-2021 GM trucks equipped with the L5P 6.6L Duramax diesel V8. Using four major components to safely build power (injection pulse width, injection timing, fuel rail pressure and airflow), the V3 Pulsar allows you to bring out your Duramax’s true potential safely.