
Coil On Plug Ignition (COP)
These are the COPs used on in-house engine builds running EFI. We selected these Denso coils because of their:1. very high spark energy -- good enough for over 750whp on the Dynapack chassis dyno on an air-cooled 911, and over 40psi boost on water-cooled racing engines without blowing out the spark2. excellent fit -- good seal to the valve covers, and low profile to make spark plug service in the car easy 3. extreme reliability -- unlike other manufacturer's coils that need regular replacement (BMW, VW/Audi), or replacement for performance application (996/997), coils on Toyota/Lexus engines have a reputation for lasting a long time and enduring the punishment of racing These are "smart" coils, so the ignition driver is built in; no external ignition module/amplifier is required. Each coil receives +12V, Ground, and an ignition trigger directly from the ECU. Fits: 911, 930, 964Does not fit 993 - interferes with the power steering belt Although a tight fit onto the spark plug, we