Boosted LS fuel system configuration
Thread Starter
Teching In
Joined: Mar 2010
Posts: 48
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From: Tulsa, OK
Boosted LS fuel system configuration Please let me know if I'm overlooking something. This is a 408/88mm/E85 combo, trying to get the fuel system right in my head. Pump is a Magnafuel 4303 (I know this will probably be maxed out) and FIC2000's. Stock truck ECU for now with Holley EFI in the future.
I made this diagram to make sense of it to myself, will this work alright?
From what I understand the external FPR will set the base pressure (43.5psi w/3bar MAP) and I'll pull vacuum before the throttle body on the intake pipe for boost referencing, right?
I made this diagram to make sense of it to myself, will this work alright?
From what I understand the external FPR will set the base pressure (43.5psi w/3bar MAP) and I'll pull vacuum before the throttle body on the intake pipe for boost referencing, right?
I'm pretty sure you need to source the vacuum after the TB for the FPR; I am setting something similar up and am using a port on the intake. When the throttle closes the spike in psi pre-throttle body will hike your fuel pressure when it should be falling off.
