Speedy EFI, TunerStudio, and connecting your NA Miata
Just in case this helps anyone else in the future, here's what I did so that my SpeedyEFI connects each and every time. First and foremost; the current best base tune for your stock 1.6 Miata is the 2018.09 firmware and tune. You can get that here at SpeedyEFI 's blog. Second, you must make sure that your firmware on the ECU is either 2018 or 2019. The 2020 firmware is wildly different from the previous two and will be a nightmare to tune the SpeedyEFI provided tunes with. It is not worth the time and effort. Third, if you requested a Bluetooth module to be installed (or are going to install it yourself), make sure you disconnect it at first before you go through with connecting the laptop to your ECU. The bluetooth module and the USB port use the same COMs port in the arduino board. Think of it like two people talking into the same end on a tin-can telephone and you're trying to hear what's going on. Everything will be muddled and you won't ...