How To Turbo a MX-5 Miata: The Complete Build List
Want to turbo your Mazda MX5 Miata on a budget? This article will show you the exact setup that I used! This is the complete build list for 2Broke2Boosted, my budget turbo Miata build that I featured on my YouTube channel, CashedOutCars. This list contains ALL the main parts I used as well as where to buy them. Keep in mind that you will need all of these components to reliably turbo your car regardless of budget, so this is a great starting point for any build!
The ECU is the brains of 2Broke2Boosted. This is how you will reliably and consistently control your car's fueling and ignition timing. I went with a Speeduino based SpeedyEFI kit for this, which comes complete with an Intake Air Temp (IAT) sensor, Throttle Position Sensor (TPS) and the harnesses to hook it up. This kit is $390 new, from SpeedyEFI’s site. Lots of people go with the more expensive Megasquirt line of ECUs, however the SpeedyEFI unit does the exact same thing for a fraction of the price.
Wideband o2 Sensor and Controller
A wideband o2 sensor is a critical component of a DIY turbo build that allows you to monitor your engine’s air to fuel ratios (AFRs). This way you can monitor your car and ensure you're running safe. This sensor also will communicate with the ECU to allow you to tune your setup to its full potential. For my build I picked the AEM Electronics 30-0300 X-Series wideband for this. It cost me $165 on Amazon when I bought it, but prices slightly vary. Even if you have to pay a bit more, this is a GREAT sensor and controller.
Blow off valve
This covers ALL the main components that you'll need to turbo your car. This is a tried and true list that I'm running on my car. Click here for a spreadsheet covering the build if you'd prefer to work off that. Note that you can interchange your own parts without too much trouble, and this parts list is designed to be easily upgradable as parts break or if you want to spend more on a certain part. Don't forget to watch my build series on YouTube if you haven't already. It'll teach you everything you need to know to safely and reliably turbo your Mazda MX5 Miata. Happy boosting!