There should be a test procedure in the manual, but here's the short version. Under the CAN-bus/testmodes tab, select "Output Test Mode-Inj/Spk". I would test one at a time, although you can test all at once. I went through to make sure my firing order was correct as MS uses letters for cylinder designations. You should have already set them up in the basic engine settings. (18436572=ABCDEFGH). So set the respective injector/coil and start the test. You do have to "burn" for the test to start. Then go feel the injector to see if the correct one is clicking. I pulled the plugs to make sure they were firing- remember to ground the case if you take them out. You can vary the output interval to vary the RPM. You should see the spark fire quicker and injector click faster. Repeat for every cylinder.