• Tags

a9l

  1. T

    Digital Tuning A9l issue or something else

    So was running a microsquirt for a few years and decided to swap back to my a9l. Before the micro I was using 24lb injectors and a 76mm c&l and car ran pretty good. After swapping back to the a9l and maf car began running super lean. I was going to use my quarterhorse and turn off emissions...
    • Tufgriz
    • Thread
    • Sep 11, 2025
    • a9l fuel system lean
    • Replies: 2
    • Forum: Fox 5.0 Mustang Tech
  2. T

    Fuel Looking for a little guidance

    So was running a microsquirt for a few years and decided to swap back to my a9l. Before the micro I was using 24lb injectors and a 76mm c&l and car ran pretty good. After swapping back to the a9l and maf car began running super lean. I was going to use my quarterhorse and turn off emissions...
    • Tufgriz
    • Thread
    • Sep 11, 2025
    • a9l fuel system lean
    • Replies: 9
    • Forum: Fox 5.0 Mustang Tech
  3. What's it Worth? A9l and x3z

    Looking to off load 2 ecms. One is an unmolested a9L and the other is an x3z with a Tweecer RT. I have no idea what to ask for them.
    • DeathProof88
    • Thread
    • Jun 25, 2024
    • a9l computer ecm ecu eec x3z
    • Replies: 0
    • Forum: What is it Worth?!?!?
  4. Electrical Use a 94 engine with 89 GT wiring and A9L ECU in non-Ford chassis?

    Trying to use an all original 1994 complete pullout for an engine swap into a non-Ford chassis. Pullout was bought without engine harness or brain, and I separately bought an 89 GT engine+injector harness and matching A9L brain (based on this being the defacto solution to run a 94-95 for...
    • Wallyman
    • Thread
    • Apr 8, 2024
    • 89gt a9l sn95 swap
    • Replies: 11
    • Forum: Fox Engine Swaparoo
  5. Moates QuarterHorse and J3 Chips

    If you know the title then your probably aware that Moates is no more. Well I've taken it upon myself to come up with an alternative to help out with the ridiculous price gouging I seen happening. All the info is here- http://forum.efidynotuning.com/viewtopic.php?t=995
    • Decipha
    • Thread
    • Mar 13, 2024
    • a9l decipha eec-iv eec-v efidynotuning moates t4m0 tuning
    • Replies: 3
    • Forum: Services - Tuning, Welding, Mechanic, Body Work...
  6. G

    Electrical Possible burn mark on computer motherboard

    I have an engine out of a 93 automatic. This is a california car and everything is stock. I have been running this engine for 24 years with absolutely no problems. Until... I got a 41 code. Come to find out the O2 harness was melted and melted the wires together in a dead short. I fixed the...
    • Gently Used
    • Thread
    • Apr 1, 2022
    • a9l a9p burnt
    • Replies: 11
    • Forum: Fox 5.0 Mustang Tech
  7. Electrical EEC-IV Capacitor Replacement Info

    Replacing the capacitors in your Fox Mustang EEC? Here is the quick and dirty info you need so that you don't have to look all over the place like I did. I watched every YouTube vid I could find on replacing these 3 caps. I also watched plenty of “how to replace capacitors” in general. I have...
    • Wayne Waldrep
    • Thread
    • Jun 3, 2021
    • 1987 1988 1989 1990 1991 1992 1993 a9l a9p capacitor ecu swap eec eec-iv mustang re-soldering bad capacitors
    • Replies: 41
    • Forum: Fox 5.0 Mustang Tech
  8. R

    90 GT project

    Hi Neighbors Just newly Became a member and I excited to meet and talk to you all about my project. It’s a black 90 GT convertible automatic and she needs work. I’m very interested in what experience you all have with this or similar cars. First and foremost I want a world class T5 to put in...
    • RLG
    • Thread
    • Aug 13, 2019
    • a9l t-5 swap
    • Replies: 4
    • Forum: Fox 5.0 Mustang Tech
  9. R

    Electrical A9P in 5 speed, warm start probs

    Hey guys! I’m in the process of restoring my 88 LX to its original glory (and hopefully more). I had a BAD cold start/stumbling/misfiring issue that I made a thread about, and got that fixed. Now, it appears I’ve developed a warm start issue, and the car won’t idle when it’s warm. Runs great...
    • rocksolid
    • Thread
    • Apr 1, 2019
    • a9l a9p
    • Replies: 17
    • Forum: Fox 5.0 Mustang Tech
  10. B

    Fox 87'-88' Vs. 89'-93' Factory Wiring Harness

    I'm a new member here and this is my first post, so please go easy on me. lol Question #1 - I have a 91' Mustang GT with a Cobra Motor and T5. I am going to move everything over into a 88' Mustang Convertible that I bought which is extremely clean, straight and rust free. It's got a 4 banger...
    • BOSS_289
    • Thread
    • Nov 14, 2015
    • 5.0ho a9l chip eec-iv efi moates quarterhorse sct speedbrain tuning
    • Replies: 30
    • Forum: 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  11. F

    Idle Surging Problems

    Hey guys me again, It seems I cant keep go a single week without a major issue coming up on this thing so here's the deal now. I fixed the break up issue I talked about before with a new distributor but the car still wont idle. I have an a9l and an sct chip and I'm starting to believe I have a...
    • Foxybody95
    • Thread
    • Sep 19, 2015
    • a9l idle no throttle response sct chip sluggish surge
    • Replies: 6
    • Forum: Fox 5.0 Mustang Tech
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