This is topic 5.0 Supercharged Mustangs. FUEL PRESSURE?? in forum Tech Talk at Northern California Ford Owners  .


To visit this topic, use this URL:
https://californiafords.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=001410

---

Posted by Blownhatch (Member # 167) on :
 
I want to get a average of everyones fuel pressure with a blower. I dont have a dyno tune, so i gonna see what the average is.
 

---

Posted by LAST302 (Member # 808) on :
 
I have damn near the exact same setup as you, heads, blower, injectors, pumps, and I have had the car tuned with 38psi, fuel curve was perfect across the dyno sheet(12.5-11.5). Under boost it will shoot up to 50 depending. Oh ya, it dynoed at 466rwhp to give you an estimate!!
 

---

Posted by Vnomss1 (Member # 1699) on :
 
It really depends, the one thing you don't want to do is run lean at all. Also depends on the climate and elevation where you are at. But, being from Chicago, most people were telling me, by the way, I'm running a Kenne Bell, but it makes no difference, but most people were saying at Idle 42psi was good. I have it just below and it's running lean until I give it gas.
 

---

Posted by Wolf (Member # 1723) on :
 
I'm running 40psi with the vacuum line disconnected, then the AFPR increases FP 1psi per pound of boost. This is with a Kirban AFPR and a 155lph Walbro pump.
 

---

Fueled by Ford Mustang Owners
on CaliforniaFords.com