Long model version of VAG Ignition coils from NGK, these Ignition Coils are normally found in Audi R8 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. 12V Ignition Power
2. Engine Ground
3. ECU Signal
4. Engine Ground