A9M Automatic ECU in a manual car???

Feb 26, 2009
5
0
0
#1
Hello,

I just discovered the ECU in my '89 is A9M. According to a list I found
online this is for automatics, however the car has a manual
transmission. How will this affect the tune and drivability? Is there a
way to fool the A9M to act like a manual ECU? What's the difference?

Thank you,
Eric

Setup:
ECU: EEC-IV A9M
Block: 1993 5.0
Transmission: T56 manual
internals: Probe forged, 10.1:1
intake: Trick Flow TFS-51511001
cam: Trick Flow TFS-51402000
lifters: Ford Racing
pushrods: Trick Flow TFS-21406700
heads: Trick Flow TFS-51400004
rockers: Trick Flow TFS-51400510 1.6:1
MAF: 75mm 30lb tune
Throttle Body: BBK 75mm
Injectors: 30lb (red)
 
  • Sponsors (?)

HISSIN50

"How long does it take to get help in here?
SN Certified Technician
Nov 29, 1999
31,172
22
119
#2
The auto puter works fine in an AOD car.

To exactly mimic an A9L, you'd need an A9L or a chip with an A9L tune (or an RT).

The auto puter should have a little more off-idle timing advance (to help a converter), amongst a couple other small differences.
 

wythors

Get off my lawn!!!
Founding Member
May 17, 2000
2,277
33
69
C Addle
#3
The problem I had with mine after the AOD/T-5 swap was that the car would intermittantly die coming to a stop with the clutch in. The A9L has a function that holds the idle up between shifts that the A9M lacks. The chip with the A9L program fixed the problem.
 

Mr. Rustypwnz

Advanced Member
Jun 1, 2005
1,761
62
69
indianapolis/ valdosta ga
#4
no problems with my auto computer in my manual car, it surges a little everyonce in a while, but I think thats the nature of the beast...
 

Similar threads