Fuel pump rewire
#1
Don't hate my V8
Thread Starter
iTrader: (4)
Join Date: Mar 2006
Location: Cornfield, Indiana
Posts: 1,129
Likes: 0
Received 0 Likes
on
0 Posts
Fuel pump rewire
hi, i have a 87 TII.
i want to rewire my fuel pump because i do. i have a AFPR but run stock ecu w/ rtek 1.8, could i rewire it the OVERKILL way just without overkill wires?
thanks.
i want to rewire my fuel pump because i do. i have a AFPR but run stock ecu w/ rtek 1.8, could i rewire it the OVERKILL way just without overkill wires?
thanks.
#3
rotorhead
iTrader: (3)
The "overkill" way was when I bypassed the resistor relay and ran straight 8 gauge into the fuel tank for a Supra pump. There were no factory wires reused at all. Most other rewire jobs splice into at least some factory wiring and use 10 or 12 gauge wire. I ran 21psi on a T04S turbo with this setup, no issues, no dual pump setup or Boost-a-Pump style amplifier needed.
But if you have an Rtek 1.8 you are not going to be making enough power to do that. Who is to say that what I did was even "necessary" ? And I had a Power FC in addition to an aftermarket FPR, so I could easily retune the idle. But i bet if you set your FPR to a base pressure near stock (36psi without a vacuum source?) removing the fuel pump resistor wouldn't affect the idle mixture too much.
What I'm trying to say is, don't do what I did. It really is "overkill" for your setup, although it may not have been for mine.
But if you have an Rtek 1.8 you are not going to be making enough power to do that. Who is to say that what I did was even "necessary" ? And I had a Power FC in addition to an aftermarket FPR, so I could easily retune the idle. But i bet if you set your FPR to a base pressure near stock (36psi without a vacuum source?) removing the fuel pump resistor wouldn't affect the idle mixture too much.
What I'm trying to say is, don't do what I did. It really is "overkill" for your setup, although it may not have been for mine.
#5
Don't hate my V8
Thread Starter
iTrader: (4)
Join Date: Mar 2006
Location: Cornfield, Indiana
Posts: 1,129
Likes: 0
Received 0 Likes
on
0 Posts
well, when i was setting my AFPR i could only get it to 30psi max. with it all the way closed off. but i did have a vacume source (dough!) so i'll have to check it again w/o and see if the presure gets up to my desired 35-40psi
PS i have walbro 255
PS i have walbro 255
#6
Don't hate my V8
Thread Starter
iTrader: (4)
Join Date: Mar 2006
Location: Cornfield, Indiana
Posts: 1,129
Likes: 0
Received 0 Likes
on
0 Posts
checked it with the car not running, but everything but the lights, whipers, and igniton on. (i have no radio, and i also have an e-fan along with the aux fan running all the time.) pushed the afm flapper open by hand and the fuelpressure instantly shot up to 40psi.
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM