1. For wheel blast increase media flow rate (same RPM) 2. For Air blast increase media flow rate (may have to increase air pressure to maintain intensity 3. For Air blast use larger size lance and higher media flow rate 4. Buy additional new equipment and double your productivity..
And if you use smaller diameter peening media be sure to adjust the wheel speed (RPM) or the nozzle air pressure (PSI) to get you back to the correct intensity.