Short model version of VAG Ignition coils from NGK, these Ignition Coils are normally found in Volkswagen etc.
VAG coils have built-in amplifier, means they can be used with ECU's that do not have internal.
ECUMaster ECU's all have built in amplifiers means they can control both VAG and other models without amplifier
1. Engine Ground
2. Engine Ground
3. 12V Ignition Power
4. ECU Signal