Home Technical Resources Engine and Engine Management Four Wire “Smart” CoPs See more from Delphi An overview of the application and operational theory of four wire smart CoPs. Related Information Three Wire “Smart” C.O.Ps An overview of the operational theory and application of three wire smart CoP (Coil-on-Plug) systems. Facebook Twitter Google+ LinkedIn Email Watch Video Variable Valve Timing Is Becoming A Reality A look at the basics of how variable valve timing affects engine performance, how it fails and a few tips on troubleshooting variable valve timing systems. Read More
