this unit is well made and easy to use I have owned it for nearly a year
I run a performance workshop and many of the fuel injectors I test are generally very large in excess of >1000cc per minute, which the original pump was not able to supply the volume and pressures I required, ( this would not be an issue with general service workshop it would easily test and clean any standard injector ) so I added a 27amp power supply to the unit and a Walbro 525LPH fuel pump and a Turbosmart FPR800 adjustable fuel regulator
I find the ultrasonic cleaner and injector driver test features very effective and the tester has given me good service, only regret I have is that I should have bought the 8 injector version :)