VW 16V "Bosch" Trigger

  • Model: IGTN16VME7
  • Manufactured by: US Rally Team


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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 (M8x1.25). Then, bolt on this assembly and enjoy direct engine management support.

USRT VW 16v Bosch cam trigger

Bare head shown with USRT 16v Billet Coolant Neck

USRT 16v Bosch ME7 trigger kit parts
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):
USRT 16V Bosch ignition trigger wiring

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