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88 ECU


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#1 03CL55AMG

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Posted 30 June 2011 - 09:57 PM

OK so I got an 88 ecu for my 87 quest and when I pulled the old ecu out it was also from an 88 at least that is what was marked on it in black marker, so I looked at the numbers between the two and they are all the same except the 88 I was putting in had a A on the end. Here is what the numbers are maybe somebody can tell me what the difference is, here are the numbers for the one that was in the car when I got it and is marked 88 quest  #E2T13674.   Ok here are the numbers for the one that I put in that is also marked 88 quest  # E2T13674A, notice it has the A on the end ?. there is also a bigger number above the smaller numbers on the label on both ECUs  # 6394, not sure what all these numbers mean but maybe you guys can help me, thanks.
Forged motor, weisco pistons ,3" exhaust, garret 60 cold/ 70 hot turbo, bosch 1000cc injectors. meth kit. chads intake and header. holly EFI stand alone. *DM intercooler. grimspeed boost controler. stock cam.





#2 vbrad511

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Posted 30 June 2011 - 10:16 PM

The bigger numbers are the ones that matter. The 6394 is an 87 ECU, unless the internals have been swapped. 88-89's end in 0197.

#3 Shelby

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Posted 01 July 2011 - 05:32 AM

as i recall 87 ecu's are mount'd connectors up,,88/89 ecu's are mount'd connectors down ,  you may have an 88 not an 87 , most 87's with 88 ecus still have the 87 ecu case but with 88 internals
the 87 ecu had a single board the 88/89 had a smaller daughter board mount'd on top of the base board
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#4 Indiana

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Posted 01 July 2011 - 12:21 PM

1984
Ignitor
MD071942

1985/86
Ignitor
MD071942
MD093767  "P" series

1987
Ignitor
MD109942

1988/89
Ignitor
MD125748

----------
1984
ECU
MD071084  Manual
MD084583  Auto

1985
ECU
MD084582  Manual
MD084583  Auto
MD090798  "P" series manual

1986
ECU
MD101175  Manual
MD101176  Auto
MD101177  after 10/85 w/intercooler

1987
ECU
MD111820  Manual/Auto
MD106394  w/intercooler

1988/89
ECU
MD120197  

----------
1984
Distributor
MD061593
Governor set
MD607784
Vac Adv Unit
MD607785

1985/86
Distributor
MD061593
MD093766  after 12-84  
Governor set
MD607784
MD611368  for 3766  
Vac Adv unit
MD607785
MD611360  for 3766  

1987
Distbibutor
MD109937
MD109938  w/intercooler
Governor set
MD607784 for 9937
MD611368 for 9938  
Vac Adv Unit
MD611360

1988/89
Distributor
MD119754
Governor set
MD611368
Vac Adv Unit
MD611769



#5 03CL55AMG

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Posted 01 July 2011 - 12:32 PM

Thanks guys, looks like i had an 88 unit in there already the one i had pulled out had 0197 in marker written on it so I will check to see what I put in may be an 87 ecu.
Forged motor, weisco pistons ,3" exhaust, garret 60 cold/ 70 hot turbo, bosch 1000cc injectors. meth kit. chads intake and header. holly EFI stand alone. *DM intercooler. grimspeed boost controler. stock cam.




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