Blue spring will not fix a faulty pump! Faulty pump is un known. And the oem spring will lower the amount of fuel that passes to the injectors. It is just a necessity on the 6.0's if you do not want to loose injectors! The oem spring starts at the min. Pressure required and if the spring weakens over time it will prevent the injectors from receiving the amount of fuel necessary. Very cheep compared to having to replace injectors
You can order a fuer filter lid from bulletproof that has 1/4 threaded hole in it for a gague,
You can order a fuer filter lid from bulletproof that has 1/4 threaded hole in it for a gague,
