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How to update firmware and load a base tune


Step 1. Download the newest version of SpeedyLoader, the Speeduino firmware and base tune program.
Step 2. Use SpeedyLoader to update to the firmware of your choice.
Step 3. Click “Get Base Tune”, this will save a copy of the base tune you select to your “Downloads” folder.
Note 1: It’s important that your base tune that you select matches the firmware signature that comes on it. Loading mystery tunes into mystery firmware will create interesting results.
Note 2: It’s extremely important that you select a base tune that has the correct Board Type that you purchased. If you load a tune with the incorrect board type, it can cause catastrophic damage to your car or ECU.

8 thoughts on “How to update firmware and load a base tune

  1. Hey Chris, I recently bought a 94-95 pnp ecu 2nd hand. Just looking for some help getting my ecu set up correctly. Some questions I have are
    1. Where do I download the toning soft ware?
    2. Being this ecu is second hand, I do not have any kind of instruction of installing and updates firmware/software. Is this something you may provide?

    1. All of our ecus tune with Tunerstudio.
      Join the SpeedyEFI troubleshooting and support facebook group if you haven’t already.
      Firmware and tune are in Speedyloader, if you are starting out, we suggest 202012 firmware.
      Use the 89-95 base tune, set injectors to semi-seq, set required fuel, set fuel pump to A9, and calibrate all sensors.

  2. i recently picked up a 91 1.6 turbo miata, came equipped with one of these speedy efi ecus. never heard of it, never seen it, but i am wondering how do i get the current tune off this ecu. or how can i access the tube to make changes? thanks in advanced

    1. Everything is done with Tunerstudio. You will need the arduino IDE from for the driver package as well.

  3. hey chris im having troubles finding the base tune for the 90-93 pnp kit everthing i see is telling me the base tune is in the blog but i cant find it anywhere this is my first time doing anything like this and i have no idea where to go if you could get back to me that would be great thank you

    1. The 89-95 base tune is available in Speedyloader. Download it, select your firmware version, and hit “get base tunes”

  4. hi chris everything seems to be auto connecting to my speedyefi ecu and ive downloaded speedyloader and even have the pnp stock na6 tune downloaded but i have a tubro installed was wondering if that tune works and also no option says speedyefi 89-94 option is the pnp stock tune fine to run on my na6?

    1. If you are making boost, you will need to scale all those tables for positive pressure. the basic base tune is for n/a

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