Ultrasonic injector cleaning

[Output Flange]

While I have my engine in bits, it crossed my mind to get the injectors sent off to be ultrasonically cleaned and the flow rates checked.

I've only looked at one website offering the service, and it's about £90 for a set of 6.

What I'm wondering is whether it's worth doing? There were no errors flagged on the ECU for injector problems...