I always thought that the ProM meters were cheezy and cheap looking. Never understood the "calibrated for xx# injector thing either.
My first experiance with fuel injected cars was in the GM world, so the calibrated for injector blah blah thing was weird to me
SCT meters have their own files that are loaded into the tuning file.
But I am still a Newbie at the tuning thing..so what do I know