I finished the max flow rate test and calculated 14mm³/s which is even above the default value for the Bambu PETG profile. This was at 260C temp. The pressure advance was set to 0.065 and the flow ratio default value at 0.95 looked good. I am going to print the temp test tower again but from 260C to 270C. All these test prints looked great. I think the object I am having fail is just difficult due to have lots of overhangs because of the threads. It’s a good stress test.
5mm³/s start, 20mm³/s end, with a step of 0.5