Dodge Ram 2004 Diesel 2500/3500 Power Puck Tuner. DiabloSport applies the latest in digital technology to transfer the performance of the Cummings engine to another level. The PowerPuck Diesel Tuner remaps the fuel delivery of the diesel injection pump and advances the injection timing curve. The rugged PowerPuck Diesel Tuner is CNC-milled out of T-6061 Aluminum for superior durability, and factory spec interlock connectors with a completely sealed wiring harness provides a stock look. Average power gains are 50 HP and 125-ft/lb TQ.