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  1. Don 95Vert

    few SCT tuning questions

    Adaptive changes fueling. It adapts to slight changes in the MAF and other fueling hardware. Keeping it on and tuning is the same as chasing your tail. As you change things, it adapts and it looks the same. Turn it off. You do not adjust the base fuel table until the MAF is dialed in - do that...
  2. Don 95Vert

    Why me?!!? -_-

    Usually, on a stock fan, if the fan fails to come on, but will come on with the AC on, it means your ECT sensor is bad...
  3. Don 95Vert

    car keeps self testing without jumper??

    Usually a short somewhere in the 02 sensor harness does this...
  4. Don 95Vert

    '95 Vent selector is not working

    It's controlled by vacuum, and if a vacuum line has come off or is broken, it'll do just what is happening to you. You need to feel around back there for vacuum lines that may have come off and reconnect them. Usually you can find them and you can also find where they need to go by just reaching...
  5. Don 95Vert

    Mail-order custom tune for a F/I setup?

    The KB chip is just an SCT chip - it can be reburned. Can't be read though (with SCT hardware).
  6. Don 95Vert

    lincoln town car tuner question

    Chances are no one will make a handheld with canned tunes in it. But an SCT X3 would most likely work just fine with custom tunes for it - I do tunes for Lincolns all the time, just need to PCM code to know for sure if it's available.
  7. Don 95Vert

    Does a stock 1999 Mustang GT have a rev limiter?

    Most 2v rev limiters are set at the factory to a specific RPM - box code GTG3 for example is 6050 RPM - and that would be typical for a 2v. There is also a speed limiter - on some models it is pretty low, but in a 2v, it's like 180 MPH - something 99.9999% of cars are not capable of hitting...
  8. Don 95Vert

    turbo stang dies after spinning tires

    Wow, such misinformation - the internet is really good in a lot of cases but not so good in this case. Sorry, you are wrong, do some checking before posting please because other people will read this and take it as gospel. The DOHC motors had knock sensors, except for the 03-04 Cobras, the SOHC...
  9. Don 95Vert

    turbo stang dies after spinning tires

    If it's an 02 GT, it HAS no knock sensors - If it is draw through, I think my reply answered your inquiry - we had the exact same thing on our turbo Mustang and turbo Lightning many years ago and came up with fixes as I described. Since then we have tuned hundreds of turbo cars and see this...
  10. Don 95Vert

    turbo stang dies after spinning tires

    If you are running a draw through MAF setup, your problem is the turbos are still spinning down and creating more airflow when you let off the throttle causing MAF backwash and usually creating a momentary very rich condition that kills the motor. This is something that usually cannot be tuned...
  11. Don 95Vert

    Need Tune for my 1996 Cobra

    I assume you mean the old light blue handheld - unless you find a dealer with really old software still functioning you are out of luck because long ago SCT removed the capability to reprogram those from the software.
  12. Don 95Vert

    WOT Tuning Question?

    Actually, to do that, he needs to force open loop with a tune, otherwise a host of issues will pop up because the PCM will be looking for 02 sensor data. The other thing is if he essentially runs it in OL all the time and it runs good the way it is, then it probably does NOT need a tune because...
  13. Don 95Vert

    Does anyone know how to understand SCT logs?

    Yes, basically it - no more FP, so the PCM keeps increasing PW to compensate. May NOT be in the tune - may be wiring, or something else. With 2 GT pumps, you DO need either 2 FPDM's (best) or a modded FPDM (not the best choice IMHO). You'll be able to datalog and change the FPVT with the...
  14. Don 95Vert

    Does anyone know how to understand SCT logs?

    When the FPDC starts dropping the PCM reacts by giving more injector PW, so you won't notice it at first, but once the A/F does start dropping, it drops like a rock.
  15. Don 95Vert

    Help needed with Lean 4.6 2V. Logs enclosed

    Max AD counts in an untuned vehicle is 980, this can be extended to 1023 with a tune. It is not pegging the MAF. You cannot talk about rich or lean without wideband data or else you are just guessing. I suggest you get a good wideband and check things out.
  16. Don 95Vert

    Does anyone know how to understand SCT logs?

    Could be you need to upgrade the wiring as well, can't remember if you did. Or the FPVT needs to be dialed in better. Are you running a modified FPDM or two FPDMs with those pumps? Most people have better luck with two of them.
  17. Don 95Vert

    Help needed with Lean 4.6 2V. Logs enclosed

    JUst curious how you determined that it was running lean without wideband 02 data? Or am I missing something here? Also, closed loop is used at idle and part throttle, open loop is used at WOT. Don
  18. Don 95Vert

    Does anyone know how to understand SCT logs?

    Sounds great - now you know that you HAVE to fix mechanical issues before a tune can be done. You are well on your way. FYI - Ford GT pumps do require a several step tuning change in the PCM or the fueling will do funky things on you, usually at WOT. Plus the fuel pump voltage table, even though...
  19. Don 95Vert

    Does anyone know how to understand SCT logs?

    Just let me know! FYI - we are closed next week, back open on August 16th...
  20. Don 95Vert

    Does anyone know how to understand SCT logs?

    Looks like you are well on your way to figuring it all out! Great job! Having major issues to deal with and figuring them out is the best way to get a good education on how to troubleshoot and fix your car! Don
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