Piggy Backing ECM's
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Piggy Backing ECM's
I am looking into switching to a MegaSquirt becasue im going to be adding boost to a engine and want to keep the electronic transmission controals. I know i can run two ECU's but the big question is how do i feed both the ECU's signals that they both require with out loosing signal quality while spliting the signal
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Car: 1985 Berlinetta
Engine: Megasquirted TPI
Transmission: Transgo 700R4
Axle/Gears: 3.42
Re: Piggy Backing ECM's
What transmission controls are you talking about???
What kind of car do you have?
The f body cars do not have an electronic transmission. The only electrical requirement is for torque convertor lockup, and the megasquirt can handle that and much more.
What kind of car do you have?
The f body cars do not have an electronic transmission. The only electrical requirement is for torque convertor lockup, and the megasquirt can handle that and much more.
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Car: 84 Z28 H.O. w/Megasquirt II
Engine: semi-stock L69
Transmission: T-5 non W/C
Axle/Gears: 3.73 open
Re: Piggy Backing ECM's
You could use a NPN transistor to amplify the signal. Please bear with my bad art.
On a side note...if your willing to wait a few months, the GPIO board will be available for the Megasquirt. It'll control your 4l60e, and just about anything else you could imagine. That'll save the headache of piggy-backing.
Code:
5 volt source-->N P N--->to both ecm's ^ | | from dizzy
Last edited by pizza_guy; 06-21-2007 at 07:58 AM.
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Re: Piggy Backing ECM's
ok when using a transitor to amplify the signal im still having to split the wires to i simply just put a splice in and make one wire go into two or do i need to then amplify each signal
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Car: 84 Z28 H.O. w/Megasquirt II
Engine: semi-stock L69
Transmission: T-5 non W/C
Axle/Gears: 3.73 open
Re: Piggy Backing ECM's
I would initially try it without the amplification at all. There is a chance you won't even need it. IMO, at the most, you'll only need to amplify before splitting the cable.
However, a little overkill won't hurt anything, and if you're willing to spend the money(quite a little in this case) and time to amplify after splitting, it wouldn't hurt anything.
However, a little overkill won't hurt anything, and if you're willing to spend the money(quite a little in this case) and time to amplify after splitting, it wouldn't hurt anything.
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