Evo 8 -6 Fuel Feed Line? How to
Jan 16, 2017, 02:49 PM
#16
Evolved Member
Thread Starter
What injectors are you running? Were you running the walbro 450 on stock wiring?
DO NOT do a straight rewire on that walbro 450. You need to do a dual voltage reqire or it will over run the stock regulator. The stock regulator and return line with the siphon drilled to 9/64's CAN handle a walbro 450 as long as the rewire is done so that it maintains the stock dual hi/lo voltage function.
DO NOT do a straight rewire on that walbro 450. You need to do a dual voltage reqire or it will over run the stock regulator. The stock regulator and return line with the siphon drilled to 9/64's CAN handle a walbro 450 as long as the rewire is done so that it maintains the stock dual hi/lo voltage function.
My siphon is drilled already to 9/64.
Running 1450 blue max
Jan 16, 2017, 03:41 PM
#17
EvoM Guru
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That's why you were running out of fuel. The factory wiring cant support that pump under full load. It was not receiving the power it needed.
Jan 16, 2017, 04:27 PM
#19
EvoM Guru
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If you do a proper setup with the Hobbs switch, nothing will really change, except maybe the open loop fuel table in the higher load regions.
Jan 16, 2017, 04:31 PM
#20
Evolved Member
Thread Starter
Oh ok sounds good to me. Also when i recieve the hobbs switch, is it set to a certain psi or does it need to be adjusted? I thought i read a thread my mrfred that the fuel pump voltage table might need adjusting
Jan 16, 2017, 04:39 PM
#21
EvoM Guru
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The spoolin up hobbs is 7psi. You could adjust the fuel pump voltage table so that it matches the hobbs switch.
Jan 17, 2017, 08:28 AM
#23
EvoM Guru
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I'm not sure, I never played with it. I did my rewire the hard way, triggered by the ECU just like the stock wiring, so I didn't have to play with anything in the ECU.
Jan 23, 2017, 01:59 AM
#24
Hey bud, I just did mine this weekend. It was easy, accept for the Fittings and putting them on the SS fuel line, that was a *****. And SS is not easy to work with from a connector standpoint. You will most likely shred your hands like I did. However, route it under the car next to all the hard lines. ZIP tie them to the closest hard line. The engine bay hard line to fuel rail is a mother ****er to get off. I pinched two nerves trying to get it to break lose. Be prepared. its a 3/4 in or 18 mm I believe, and a 14 mm slip nut below the upper nut. Pain in the ***, because the hard line is rubber mounted to it's mount and starts to wiggle when you put tension on it. Good luck.
Jan 23, 2017, 06:34 AM
#26
Evolved Member
Thread Starter
Hey bud, I just did mine this weekend. It was easy, accept for the Fittings and putting them on the SS fuel line, that was a *****. And SS is not easy to work with from a connector standpoint. You will most likely shred your hands like I did. However, route it under the car next to all the hard lines. ZIP tie them to the closest hard line. The engine bay hard line to fuel rail is a mother ****er to get off. I pinched two nerves trying to get it to break lose. Be prepared. its a 3/4 in or 18 mm I believe, and a 14 mm slip nut below the upper nut. Pain in the ***, because the hard line is rubber mounted to it's mount and starts to wiggle when you put tension on it. Good luck.
Yes easy install on a lift.
I did it at work.
Yea oneside was a breeze to put on fitting but the side that needed trimming was a pain. I ended up removing alot of the braid so i could fully seat it. No leaks. How is your afr now?
Jan 23, 2017, 06:35 AM
#27
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Thread Starter
Jan 23, 2017, 08:50 AM
#28
EvoM Guru
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I could've sworn mrfred talked about it and has a patch somewhere. You 'll have to do some digging. It is NOT necessary to adjust though.
Jan 23, 2017, 12:02 PM
#29
Evolved Member
Thread Starter
Jan 23, 2017, 12:29 PM
#30
Yea ive read it somewere but if it isnt needed....
I still havent done the re wire yet, finally got my hobbs switch.
I still havent done the re wire yet, finally got my hobbs switch.
As to the Rewire, my thoughts is to upgrade factory wire. I.E. Battery lead to Relay 3. Gonna add a second wire to it for more current. This should in turn send a little more current down the white Relay 3 to Fuel Pump feed wire. I currently on stock wiring with upgraded ground at the pump, see 12.5V in High mode, and 8.25V in low mode. I am thinking if I upgrade that Battery feed wire/Relay 3 wire, to a double or 8~10 Gauge, it will give 13V at the pump in High Pressure...
We will see.