Basically, as the engine runs at different RPM, there are different vibrational and torsional harmonics introduced into the crankshaft and rotating assembly. Without a quality damper, you can start to destroy sometimes odd bits of the engine. Oil pump, bearings, valve train, cracking things, etc. However, the car factory has a damper (as do all modern cars I’m fairly certain). It works well enough. Only really modified cars need an upgraded damper.What will this actually do? The product description made it sound like I’d be a damn fool not to install it.