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.


88 ECU
Started by 03CL55AMG, Jun 30 2011 09:57 PM
4 replies to this topic
#1
Posted 30 June 2011 - 09:57 PM
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
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
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
the 87 ecu had a single board the 88/89 had a smaller daughter board mount'd on top of the base board
Shelby trance's StarQuest i-x.net
86MightyMax89Tsi, MPi , 20g ;) (sold:( )
88TSI Silver
89TSI red auto
86MightyMax89Tsi, MPi , 20g ;) (sold:( )
88TSI Silver
89TSI red auto
#4
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
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
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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