engine ecu & trans ecu dependent?

Speedwagon · 08-11-2002, 04:04 AM

Ok.. how do these 2 things work together? Is the engine ECU specific for an auto trans? Or does it not matter what trans you have, and the trans ecu does all the work in an auto?

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Speedwagon · 08-15-2002, 12:03 PM

Anyone happen to know?

RiftsWRX · 08-15-2002, 01:38 PM

Quote:

Originally posted by Speedwagon
Ok.. how do these 2 things work together? Is the engine ECU specific for an auto trans? Or does it not matter what trans you have, and the trans ecu does all the work in an auto?

Yes.. they are different.. in what ways I'm not sure...

But the majority of the work is done by the TCU... But it DOES interface with the stock ECU...

Jorge (RiftsWRX)
www.ProjectWRX.com

Jon [in CT] · 08-15-2002, 05:29 PM

Given the number of lines that run directly between them, I'd say that the Transmission Control Module and the Engine Control Module need to share quite a bit of information with each other.

Speedwagon · 08-17-2002, 11:25 AM

So, to buy a new computer, one would have to specify if it was AT or MT then?

Valdar · 08-17-2002, 12:25 PM

I like the MT computers cause you can downshift and the thing jumps to around 2ghz and it holds steady at 1 gig ram on my gauge.

Couldn't resist.

08-11-2002, 04:04 AM	#1
Speedwagon Scooby Specialist Member#: 19681 Join Date: Jun 2002 Chapter/Region: RMIC Location: Denver, CO Vehicle: 1998 Legacy Wagon GT Green	engine ecu & trans ecu.. dependent? Ok.. how do these 2 things work together? Is the engine ECU specific for an auto trans? Or does it not matter what trans you have, and the trans ecu does all the work in an auto? * Registered users of the site do not see these ads.

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08-15-2002, 12:03 PM	#2
Speedwagon Scooby Specialist Member#: 19681 Join Date: Jun 2002 Chapter/Region: RMIC Location: Denver, CO Vehicle: 1998 Legacy Wagon GT Green	Anyone happen to know?

08-17-2002, 11:25 AM	#5
Speedwagon Scooby Specialist Member#: 19681 Join Date: Jun 2002 Chapter/Region: RMIC Location: Denver, CO Vehicle: 1998 Legacy Wagon GT Green	So, to buy a new computer, one would have to specify if it was AT or MT then?

08-17-2002, 12:25 PM	#6
Valdar Scooby Newbie Member#: 22144 Join Date: Jul 2002 Location: Raleigh, NC Vehicle: 2007 STI UGM	I like the MT computers cause you can downshift and the thing jumps to around 2ghz and it holds steady at 1 gig ram on my gauge. Couldn't resist.