Oct 11, 2005 · A9P and the 02 harness read differently than the A9L computer and its 02 harness with pin #30 etc etc. A9P and A9L the 02 harness's are jumpered differently between the two. You put the A9L computer in an original A9P car you will burn the computer up (aka signal return trace) and it wont read 02 signal at all. Which means the car goes limp mode.

Oct 21, 2002 · The A9L was put in 5-spds and the A9P was in automatics. We all know Ford's AOD was a little sluggish so ford did program them a tad bit more aggressively and because of the automatics mushy shifts and the fact that there is no clutch pedal to tell the computer when a shift occurs, the computer did not pull timing during shifts.

Sep 1, 2010 · They are pretty close to identical. The a9l and a9m are a gufb/5spd strategy ecu. Comparing the .bins seems to favor the a9l in the spark department by a couple of degrees from what I can see but thats about it. Either way they are good to go. here are the differences: a9l vs a9m 73F6 - 73F7 Scalar PRGTD3 Misc - Purge Hot Startup Delay 56485 56515

Aug 20, 2002 · The A9L was common in all 5 speed equipped, factory mass air equipped, Mustangs from 89-93. The A9P is a similar EEC that was common in all AOD equipped, factory mass air equipped, Mustangs from 89-93.

Oct 4, 2022 · 5v reference is created out of the MCU. We are designing a drop in replacement A9L right now. We have a few test systems built and flashed the chips with the correct “firmware”. It will even work with a QuarterHorse as it won’t know the difference. Next step is to make a “high end” version with new MCU that is faster and more options.

Dec 9, 2002 · The A9L is the EEC-IV out of a 5 speed 5.0, and the X3Z is from the cobra. The X3Z "internally" sets the injectors to read as 24# injectors (meaning the mass-air is really just calibrated for stock 19# injectors, its the computer that …

Oct 6, 2011 · A9L Spark Table, adder or total? Jump to Latest 8.6K views 13 replies 7 participants last post by 87Fox5.0 Oct 7, 2011

Aug 7, 2009 · WOT spark for an A9L assuming 10* base is RPM Timing 16383.75 26.00 5000.00 26.00 3500.00 22.00 2600.00 22 ...

Oct 10, 2018 · I’ve got a Factory Five Cobra that currently runs on the stock A9L Engine is 347 with red tops and a Pro M 90mm mass air and Accufab 75mm TB. Car runs great but I have noticed it runs better when first started and cold. I’d like to have it tuned but will consider swapping to a different engine management system.

Sep 15, 2012 · Bringing this up from the dead, as it was linked from another forum - the X3Z is essentially the A9L family with some unique programming. Nothing fancy. It is a simple thing to load an A9L tune to an X3Z and then tune just like a normal A9L. Easier to go that route than to try to find all the unique items in the X3Z tune.