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  1. New ECM version of E9ZF-12A650-A2A A9L?

    5.0L Tech
    Hi. I have a 68 Mustang fastback with a 93 HO 302ci w/ 5spd manual tranny being controlled by ECM E9ZF-12A650-A2A A9L. I'm interested in doing some performance upgrades to the ECM and wondering what my options are? Chips? On-board tuning using some software package? Is there a newer version...
  2. Idle surging problem

    5.0L Tech
    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...
  3. 91 harness 93 a9m

    5.0L Tech
    ok so i by no means know anything about mustangs but know about cars in general im doing a swap 240sx v8 i have a 91 block i believe F1SE? F is 90s 1 is the year made right guy said it was a 91 i got a free A9M ecm will i was told this is auto but should work insted of the A9L i read about...
  4. Sequence Question?

    5.0L Tech
    Could an improper fuel injector order cause an engine to act like a rev limiter? I have an old 289 that is running a 302 H.O. firing and injector order. I runs but, around 3500 RPM it acts like thats it like that is red line. I thought maybe if I repinned the PCM that it would run smoother and...
  5. O2 sensors... running them or not

    5.0L Tech
    O2 sensors. I am finishing up an EFI swap on my 68 using 5.0 set up with A9l. I'm currently idling rough and sometimes it doesn't. Sometimes it runs perfect and other times it doesn't want to go at all. Could not running O2 sensors make this motor so unpredictable? I'm learning all this as I go...
  6. ok whats the diff?

    5.0L Tech
    just wondering what is the difference between the a9l and the a9p? is one better than the other?
  7. A9P to A9L after a aod to 5 speed swap?

    5.0L Tech
    I have a odd idle issue ever since I swapped to a 5 speed and I don't know how to resolve it. I idle surge (occasionally but enough to want it to stop) after I come to a stop light from driving. Sometimes it will drop to low idle perfectly, others it will drop straight to dieing, AND sometimes...