Returnless fuel lines with an A9L
Posted: 2024 Apr 02, 14:48
I’m in the process of putting an ’89 Fox powertrain into a ’66, and I’m currently thinking about fuelling.
I have the chance to buy this Holley in-tank EFI fuel pump for a really good price:
https://www.holley.com/products/fuel_sy ... rts/12-305
it looks perfect for my usage, except that it’s a 3/8 inch returnless line. i have the option of running a returnless fuel rail from a ’99 5.0 Explorer, or custom AN returnless rails. and it would be nice to only need 1 fuel line.
I’m wondering if there could be some unexpected effects to the stock 89 setup if i go returnless. in terms of fuel pressure regulation, injector pulses, confusing the ECU... whatever else I can't think of.
one key difference is the Explorers have their regulator next to the pump in the tank, and an ECU fuel pressure sensor at the rail.
let me know if you have any info to share about this. thx
I have the chance to buy this Holley in-tank EFI fuel pump for a really good price:
https://www.holley.com/products/fuel_sy ... rts/12-305
it looks perfect for my usage, except that it’s a 3/8 inch returnless line. i have the option of running a returnless fuel rail from a ’99 5.0 Explorer, or custom AN returnless rails. and it would be nice to only need 1 fuel line.
I’m wondering if there could be some unexpected effects to the stock 89 setup if i go returnless. in terms of fuel pressure regulation, injector pulses, confusing the ECU... whatever else I can't think of.
one key difference is the Explorers have their regulator next to the pump in the tank, and an ECU fuel pressure sensor at the rail.
let me know if you have any info to share about this. thx