fuel pressure
Thread Starter
On The Tree
Joined: Feb 2019
Posts: 157
Likes: 1
fuel pressure Anyone log fuel pressure vs boost and get a perfect 1:1
e85
twin 044 bosch pumps into a y -08an to the front of car , then -6an 's run 10 inches each to both fuel rails .
runnning a turbosmart and the end of one wastegate and -06 back to tank.
base pressure is at 43psi , but wont rise spot on , at 10# maybe 51psi fuel , and at 17# 57psi ???
i dont think its a fuel system issue , because even when i ran 10psi total and a lot less power , still came up 1 or 2 psi short on boost .
Holley efi ecu reading the pressure , holley 100psi tranducer ??
Also whats the best way to tell when you are getting close to running out of fuel system for power ?
e85
twin 044 bosch pumps into a y -08an to the front of car , then -6an 's run 10 inches each to both fuel rails .
runnning a turbosmart and the end of one wastegate and -06 back to tank.
base pressure is at 43psi , but wont rise spot on , at 10# maybe 51psi fuel , and at 17# 57psi ???
i dont think its a fuel system issue , because even when i ran 10psi total and a lot less power , still came up 1 or 2 psi short on boost .
Holley efi ecu reading the pressure , holley 100psi tranducer ??
Also whats the best way to tell when you are getting close to running out of fuel system for power ?
Thread Starter
On The Tree
Joined: Feb 2019
Posts: 157
Likes: 1
just after writing this , i also checked some logs and notcied the fuel pressure takes a drop off after 5800rpm, usually about 4-5 psi .
so with 50psi base , @ 10psi i might have 53psi fuel when i should have 60.
worst one i found was about 11psi down from where it should be.
E85 twin -10an lines to the back of each 044bosch pump, no pre filters.
y fitting after pumps into single -08an line then splits to -06ans into both rails.
at high rpms im using 85+ duty cycle , and i think pumps might be getting close with e85
so with 50psi base , @ 10psi i might have 53psi fuel when i should have 60.
worst one i found was about 11psi down from where it should be.
E85 twin -10an lines to the back of each 044bosch pump, no pre filters.
y fitting after pumps into single -08an line then splits to -06ans into both rails.
at high rpms im using 85+ duty cycle , and i think pumps might be getting close with e85
