Mega Tester V4
Electronic testing and pre-fault diagnosis for piezo injectors in one device.
Get a Quote
What is Mega Tester V4?
A portable piezo test device that measures the electrical and mechanical characteristics of piezo actuators. When combined with the Flow Box accessory, hydraulic response tests can also be performed.
Contact UsMega Tester V4 software and updates.
Program Installation
Installer for the Mega Tester V4 PC connection and control software (v3.11.0).
Download ProgramMega Tester V4 technical details.
Where is it used?
Piezo injector maintenance and fault-diagnosis lines
GAP control on Siemens/VDO piezo injectors
Field/mobile service teams (with battery option)
Post-overhaul verification testing
Why Mega Tester V4?
Tests whether the injector leaks into the body without damaging the ECU
Simulates real operation with DC or pulse voltage
Bluetooth-based test report creation and data archiving
Combined hydraulic + electrical analysis with the Flow Box
Mega Tester V4 images.

Common questions.
Can it be used without the Flow Box?
Yes, Mega Tester V4 performs electronic testing of piezo actuators on its own; the Flow Box is an optional accessory for those who also want hydraulic response testing.
What faults can it detect?
It detects common piezo faults such as coil burnout, short circuit, winding damage, insulation leakage and abnormal resistance/capacitance deviations.
Can it be used off-site?
Yes, with the optional battery it enables mobile service and off-workshop testing.