Have about 215K miles and getting some injector issues. A while back someone recommended replacing with a different injector design but I've forgotten the type of injectors he recommended. If I recall they were not ball seated injectors like the Bosch but they had a different way of sealing the injector flow at the tip and eliminated the tendency to erode over time. Can anyone help with identifying this type of injector. It was a different type of injector tip design? He indicated that they came with a little rougher idle however.