4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

killing the stock ECU!

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Old Dec 21, 2011 | 09:50 PM
  #1  
zero2005's Avatar
zero2005
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Default killing the stock ECU!

so... got bored... and while installing the megasquirt...

i decided to rip out EVERYTHING related to the stock ECU... working the engine bay right now, got like 60-70% of the harness out. megasquirt will be controlling the fuel/spark, plan on running a hidden "cut-off" switch for power, and 2 switches for crank&run/accessory.

now i'm thinking of other things that the stock ECU controls... and ways i can work around having to use it, at least temporarily. for example, the stock fuel pump. is there any way to bypass the ECU on a returnless setup? i'm assuming no, which means i'll have to rig up a temporary return setup using a small can&fuel pump until i can complete my full return swap (oh what fun that will be).

btw that reminds me, i have a stock GT fuel pump (returnless) if i give it a full 12v, will it spit out enough pressure/fuel to run idle if i have a return system fuel pressure regulator? dont really care about the pump dieing on me, its my old stock pump.

i'm thinking of things like lights, heating&AC, door locks, windows, trunk, EVAP, etc...
if you have pictures of some sweet control panels for stuff, post em up. i'm looking to rip out the dash i think soon as well.

nother thing, i'm gunna be dropping the tank soon, anyone got part numbers on stuff that should be inspected and/or replaced while its out? its a rather new tank (just a tad more than a year old) and i'm having it cleaned and sumped.
Old Dec 22, 2011 | 01:24 AM
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zero2005
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nother question:
anyone have any wiring diagrams of the entire car?
Old Dec 22, 2011 | 06:36 AM
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1998Slow 'Stang
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I THINK cliffyk might have some. It seems like I remember him saying he has something like a shop manual hacked up and saved on his computer.
Old Dec 22, 2011 | 06:40 AM
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Ford shop manuals have the wiring diagrams in them. I would suggest Ebay but the only one I saw on their this morning was priced higher than giraffe *****.
Old Dec 23, 2011 | 09:49 PM
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PM me...
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