Free tune download

Discussion in '1994 - 1995 Specific Tech' started by ctrout71, Jun 10, 2011.


  1. ctrout71

    ctrout71 Member

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    I am (hopefully) going to finish my head/intake swap either tonight or tomorrow. The car is a 1995 GT convertible 5 speed that was bone stock right down to the wheels and even ignition wires when I bought it. Over the past several weeks, I have put heads from a 1993 Cobra on it along with an Explorer intake. "While I was in there," I also installed JBA unequal shorties and 2.5" MAC Prochamber. The car is equipped with a TWEECER (no data logging) to accomodate future mods. Will the stock tune be a good tune for this setup or would I be better to run something different? I am hoping for a free tune to download from somewhere or for someone to share a file with me that is working great on their identical (or nearly so) build. I really don't think this very mild build will require fuel system upgrades so I'm still all stock with fuel/air delivery.
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  2. Adam95GT

    Adam95GT New Member

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    You want a j4j1 tune and set your injector settings to 19lb
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  3. ctrout71

    ctrout71 Member

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    I haven't been into the TWEECER software for almost a year. How do I set the injectors to 19lb? I thought that was determined physically by the injector.
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  4. Adam95GT

    Adam95GT New Member

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    I cant help you with tweecer ive never used one. Yes there are different sized injectors, however your tune needs to account for them. The j4j1 file is from the 94/95 cobra which essentially has the same parts your running (GT40 stuff) . However from the factory the 94/95 cobras came with 24lb injectors instead of the factory 19lb injectors found on the gt's (T4MO bin.)
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  5. ctrout71

    ctrout71 Member

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    So then do I just print out the GT file and then open the Cobra file and manually input the duty cycles and such from the GT printout?
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  6. Adam95GT

    Adam95GT New Member

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    You should be able to just load the j4j1 and change the injector values.

    -Injector slope High
    -Injector Slope Low
    -Injector bkpt
    -Injector min pulse


    The values for the stock injectors from T4MO are:
    High slope:19.64
    Low Slope: 28.80
    Min Pulse:0.0014
    Breakpt: 1.00136


    Hope these help...
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  7. ctrout71

    ctrout71 Member

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    Awesome. Thanks!
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  8. Adam95GT

    Adam95GT New Member

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    Sure thing. Let me know if you have any other questions
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