Fluidampr Performance Diesel dampers offer the best protection against torsional vibrations. Performance tuned or stock, your diesel engine will run more efficiently with a viscous Fluidampr installed. Torsional Vibrations or harmonics can destroy crankshafts and bearings. These vibrations rob horsepower and torque from the engine. Stock dampers utilize rubber or elastomer to control torsional vibrations. The rubbery material not only breaks down over time, but limits the capabilities of the damper. Fluidampr uses a viscous silicone fluid, internal inertia ring and a laser sealed housing. Our precision machined assembly is the most effective way to control torsional twisting. Fluidampr has tested on both stock and performance tuned diesel pickups. Dyno tests have shown consistent increases in horsepower and torque in the three major manufacturers.