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Old 02-16-2004, 05:43 PM   #1
Scooby Newbie
Member#: 45209
Join Date: Oct 2003
Location: Houston
2004 STI

Default MAF or MAP signal for Emanage??

I'm trying to wire my E-manage, and am not sure whether to use the MAP signal, or MAF signal. I would assume map signal, but who knows. Also, is it just me or is there a mistake in the wiring diagram for the STI. For the ignition the diagram goes
#1 = 18
#2 = 17
#3 = 16
#4 = 16 (I would assume they meant 15)

Also, this question is kinda dumb but when it comes to electronics you never know. Is the Accelerator Position Sensor the same as the TPS sensor? I know the STI has electronic throttle, just not sure if those sensors function the same.

Final question, would it be alright to use the Power supply and ground for the main unit power supply?

Thanks for the input
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Old 02-17-2004, 02:08 AM   #2
Scooby Newbie
Member#: 36568
Join Date: May 2003
02 sedona WRX gone
04' Silver STi in affect


Seems that you are the only one brave enough or stupid enough to tackle this install unguided. We'll just say "brave" for the time being. E-manage is great, but the problem is that everyone will do it differently. Greddy has about 4 or more different harnesses and a sensor or two that are all bought seperately to customized your setup. That's great, but only if you know what you are doing. I would suggest you take your car and the unit to someone who knows both the E-manage and the STi well. That may be a tough combo to order. I know Dan can serve you up, but pretty much only if you bought if from him, which I assume you didn't.
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Old 02-17-2004, 08:24 AM   #3
Scooby Specialist
Member#: 23359
Join Date: Aug 2002
Chapter/Region: NESIC
Location: San Francisco
2002 BMW M Coupe
Steel Gray


I believe you want to use the MAF signal, at least that's what's used on the WRX. You'll have to find a pinout of the STi ECU to confirm which wires for the ignition. I'm not sure what you mean by "use the power supply for the main power supply".

The e-manage is a great tool and there is a growing user base, stick with it and I'm sure you can get it to do what you need it to.
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Old 02-17-2004, 09:49 AM   #4
Scooby Newbie
Member#: 45209
Join Date: Oct 2003
Location: Houston
2004 STI


have the pinout, and found out it is the MAF. I need to use a FCD on the MAP.
I would never take my car to anyone to work on except to dyno tune. I have had way to many problems in the past sending my car to people. I'm sure there are plenty of qualified guys out there, but I've been through too much BS!

Thanks guys
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Old 02-18-2004, 01:31 AM   #5
Scooby Newbie
Member#: 55262
Join Date: Feb 2004
Location: South Africa
1998 Toyota (sorry)
Metalic green


I have just finished work on an STI using the SMT6 piggyback unit; the concept is the same as the E-manage unit. I am not sure what signal I taped into, unfortunately at the time I didnít have a wiring diagram and I was working on the ecu side not the engine bay, but the way I decided which one to use was to cut the wire while the car was running, one wire stalled the engine the other did not.

I modified the wire that stalled the engine, was able to handle fuelling and lock the boost limit on the car so that the user could raise boost.

I have been looking for a reason why they have two sensors on this car and would appreciate it if anyone could explain this to me.

By the way is you are looking for Subaru wiring diagram I found a great link at http://www.northursalia.com/modifica...ng/wiring.html

Last edited by North Ursalia; 01-30-2011 at 05:23 PM.
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