Tuesday, March 11, 2008 - 11:21 pm, by: Kim Hunt(Lxtasi)
ok well i have my rising rate fuel reg installed into the car but i'm pretty sure that it isn't installed correct. you are meant to install it on the return side from the rails to regulate pressure on an EFI engine right? what do i leave on the fuel reg as standard components go? the regulator to the fuel feed side of the rails? the rising rate fuel reg that is on the return side? or take aways both and just have the aftermarket rising rate fuel reg on the return line? has anyone got any pictures or some good advice to help me out? thanks
Thursday, March 13, 2008 - 11:26 pm, by: Kim Hunt(Lxtasi)
i just dont get how you can control the fuel pressure when you have a standard reg that will only let through the max pressure that the stock car was meant to have interfearing with the after market rising rate.
this is what i have plans on doing. either go all out and get the speed flow fitting and get fittings welded onto rail where the reg and the osolator is and just run the rising rate for controlling the fuel pressure alone or just leave the reg and the osolator but disconnect the vacuum line from the standard return reg so that it is letting out max pressure and just use the rising reg on the return line further up.
but will the standard reg flow more with no vacuum line to it or will it flow more when it has boost running through it?
Thursday, March 13, 2008 - 11:28 pm, by: Daniel Clarke(Dieseltrain)
Maybe you need to take it to a shop and get it done on a Dyno? Shouldnt be messing around with fuel delivery on boosted applications and/or trying to firgure it out. Can be a very costly experience and can result in broken internals.
Friday, March 14, 2008 - 07:07 pm, by: Joshua White(Joshua_88)
hey guys, off topic a bit but does anyone know how to identify what ratio the fuel regulator is? i have a malpassi (silver top) but don't know if its 1:1 or 2:1 or what
Andrew Ferres DieHard WA '90 C-F Celsior V8, '84 Soarer V8, '91 Supra V8
Saturday, March 15, 2008 - 11:50 am, by: Andrew Ferres(Peewee)
You can leave the standard one there but you must run the new reg in the return line.
The only time you'd need to remove the standard one is when you want to run less pressure than stock.
Also I would never run a RRFPR without a high pressure pump. Most pumps will not handle the pressure a RRFPR can do and your flow will suffer significantly.
Andrew Ferres DieHard WA '90 C-F Celsior V8, '84 Soarer V8, '91 Supra V8