A4 ECM for T56 car

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Mar 19, 2009 | 05:46 PM

trekin9700

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A4 ECM for M6 car

Im replacing my ECM, and found one for an A4. I was wondering if it will be compatible with my car being how it has the T56. the ECM is for a 93 and my car is too. Thanks in advance for any insight you might be able to provide.

Last edited by trekin9700; Mar 19, 2009 at 06:09 PM.

Mar 20, 2009 | 07:06 AM

shoebox

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From: Little Rock, AR

Idle speed is different between the two transmissions and there will likely be some other subtle things. Better to get the one for your setup, IMHO.

Mar 20, 2009 | 07:20 AM

rskrause

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The PCM is identical. There are a few minor differences in the tune.

Rich

Mar 20, 2009 | 05:47 PM

trekin9700

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Whats the difference between the PCM and ECM?? Isnt the PCM on the back of the seeedo Cluster?

Last edited by trekin9700; Mar 20, 2009 at 06:08 PM.

Mar 20, 2009 | 06:03 PM

trekin9700

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would an ecm form a lt1 Vette with a M6 tranny be identical too??

Mar 20, 2009 | 07:37 PM

shoebox

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Quote:

Originally Posted by trekin9700

Whats the difference between the PCM and ECM?? Isnt the PCM on the back of the seeedo Cluster?

Quote:

Originally Posted by shbox.com

The computers changed from ECM (Engine Control Module) in 1993 to PCM (Powertrain Control Module) in 1994 and later (adding electronic transmission control). Though 1993 and 1994 were both OBD-I, they used different computers. 1993s used the replaceable chip type (PROM), while 1994 and up used flash memory for storing the program (EEPROM).

Quote:

Originally Posted by trekin9700

would an ecm form a lt1 Vette with a M6 tranny be identical too??

94-95 Corvette PCMs are the same as the 94-95 F-body PCMs.

Mar 20, 2009 | 09:32 PM

trekin9700

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i was scanning my car with a snap-on solus pro, and it said my oil temp was -32. Do these cars even have oil temp sensors??

Mar 20, 2009 | 10:16 PM

shoebox

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From: Little Rock, AR

Quote:

Originally Posted by trekin9700

i was scanning my car with a snap-on solus pro, and it said my oil temp was -32. Do these cars even have oil temp sensors??

No. Disregard.

Mar 31, 2009 | 06:23 PM

trekin9700

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Got the ECM. Just put my old prom in, and it's working good so far. Since i put the old prom in, do i need to have it tuned? I know if i used the A4 prom i would.