PDA

View Full Version : Fuel Pressure Question



stilldubbin203
02-07-2008, 03:03 PM
Does anyone know what fuel pressure im supposed to be running (in PSI) with a ko4 with pc-16 and 310cc injectors

Solaris
02-07-2008, 03:18 PM
3bar (43.5 psi), from the horse (http://www.giacusa.com/faq.php)'s mouth. Item #10

mike-2ptzero
02-07-2008, 04:07 PM
3bar (43.5 psi), from the horse (http://www.giacusa.com/faq.php)'s mouth. Item #10

Correct, that is what the chip was tuned for. But plenty of people have had better luck running it at 2.6-2.8 bar since the car runs on the rich side with the 3 bar fpr. The big issue is that people tend to use injectors from 310-3.17cc so running an adjustable fpr helps fine tune the fueling.