[JFP in PA]

Similar; the DOF system, contrary to the advertising, draws some of the hottest and dirtiest oil from the cylinder head to feed the bearing. This oil feed has also caused problems with the Vario Cam system on some cars that immediately went away when that oil line was disconncted and plugged. The reason they went this route is because the oiling system of the IMS Solution is covered in a patent. Injecting pressurized oil into the factory bearing also tends to flood the entire IMS shaft, which is problematic at best. The IMS Solution system uses a plug in the shaft behind the Solution to prevent this, and this plug is also covered under one or more of the various patents Jake got on the system.

As for the costs, "you gets what you pays for" in these systems. the Solution is the only one that is well thought out, extremely well designed, and totally permanent. The Solution is also the only iMS retrofit that can be removed from one engine and installed into another without any concern. I have them in both of my personal cars.