BMW 320i (F3X) ECU Tune (2017-2019)

Select Stage :
Terms & conditions


Maximize power improvements while maintaining drivability and dependability. By tuning the ECU, you can increase the power and drivability of your vehicle. 


  • Stage 1 = +80hp/90tq
  • Stage 2 = +90hp/100tq


-The handheld will read your OEM file through a connection via the OBD-II port. Load MyGenius software on your computer and connect handheld device.

-Load OEM file onto your computer and email file along with our ECU Tune guide to TR3 Performance. Once the file is received, we will rewrite you a custom tuned file within 24-48 hours.

-The tuned file will be sent back to you. You then will be able to upload it onto your handheld device, then onto the vehicle flash back to the OEM file at your convenience directly from your handheld device!


-Once connected, the handheld unit is married to your vehicle. This means you will only be allowed to use it on this vehicle only.

-Please make sure you have access to a Windows/PC computer to upload and exchange file information.

-Please make sure you review, complete and email in our ECU Tuning Guide. This guide is to help us provide you with the most optimized tune for your vehicle’s specifications and modifications. Power gains may vary depending on other modifications done to the vehicle.


We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. To start a return, you can contact us at If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted. You can always contact us for any return question at


TR3 Performance cannot be held liable for refusal of, delay of, loss of, theft or damage to a shipment of any item. The customer agrees to indemnify TR3 Performance for all costs, fees and expenses TR3 Performance incurs as a result of any violation of any local, state, federal, national or international laws or regulations. Customer agrees to take responsibility for lost packages that were not independently insured or sent without requiring signature. The customer understands they will be liable in the event of additional fees, tariffs, or legal issues such as border seizure. Customer accepts these risks and agrees to release TR3 Performance of all liability.

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