A complete cam position trigger for early VW 16-valve motors (KR, PL, 9A, ABF, etc), this system is compatible with Bosch ECUs including M5.92 (USA AEB), M3.82, M3.83, ME7, and more. Remove the stock distributor. Drill/tap the exhaust cam to accept mounting hardware. Then, bolt on this assembly and enjoy direct engine management support.
Bare head shown with USRT 16v Billet Coolant Neck
Kit includes: Billet (6061) aluminum trigger assembly and stainless steel hardware.
As we all know, the 16v engine predates electronic fuel injection and relies upon a vacuum advance distributor to handle timing duties plus spark delivery. All the VW engines to follow feature at least a crank position sensor. These crank triggers have a 60-tooth wheel with 2 missing teeth (commonly referred to as "60-2"). This is what you need for batch fuel injection and wasted spark ignition.
Later multi-valve engines are also fit with cam triggers to make sequential fuel injection and ignition possible. -more power, lower emissions, and increased fuel efficiency! These have 4 teeth with 2 larger and 2 smaller. This non-linear but sequenced counting of the cam trigger teeth tells the ECU which cycle the engine is on. -intake, compression, power, or exhaust.
Underneath the USRT Bosch Trigger's stylish top is a Hall effect sensor that wires up identically to VAG 1.8T 20v (all variants) and Audi 2.2 20v (AAN):