tuning the 5.3 questions.
Q's
what ecu is best to run?
should i get the flex fuel injectors reflowed or just get higher flowing from the begining?
as far as wiring it, it dosn't have a harness either, should i go with the original harness or can a none flex fuel harness work and just un plug the sensors or plug the holes?
should i keep it none return?
and last is the vacuumless fuel pressure regulator a good idea to keep or should it just get swaped out?
I really appreciate any input. sorry if the questions make me sound like a newb. I have never delt with this kind of set up. its been N/A for me until now.


