gerikivan

im trying to figure how to hardwire my walbro 450.. i know theres a guide for it but the old kit uses a different color wiring and never showed where to wire the 87. i pretty much figure everything except the yellow wire which i power to pump.. so where can i find the power to pump wire...

splattj

iTrader: (2)

You should really be running a new, larger gauge wire from pin 87 to the walbro to support the higher amperage. Check out this writeup:
https://www.evoxforums.com/forums/sh...ad.php?t=52658

Biggiesacks

the fatter wires are going to be your power and ground. My guess would be black is ground and blue is power. You can download the FSM for free from the evoscan website and it has all the circuit diagrams in it if you want to be sure. Or you can use a DMM to trace out the wires.

gerikivan

gerikivan

well i figured that the 86 and 87 goes to the same blue wire together

Jaraxle

You lose the low/hi voltage feature of the ECU by doing this "hardwire mod". Depending on the upgraded fuel pump this can then overrun your stock FPR & return lines and cause erratic fueling at idle and out of boost conditions - FYI....

BamrynEvo

exactly what is happening to me now.

eliruiz

That's why after doing this you have to go configure your ecu.

FckingTrippy

Just did this to my 2015

Blue wire is the signal wire you need to tap into (assuming they are the same across different years)
And for power you go straight to a battery with your fuse and relay in between