Pre - 2021 ECU/DME Bench Unlock For BMW F&G Series - N20/S55/B48/B58/S63/S58

Unlock Your ECU for MHD or BM3 Tuning!

If you own a 2018-2020 BMW, your ECU must be bench-unlocked before you can apply custom tunes with MHD or Bootmod3. Our service ensures a same-day turnaround once we receive your ECU(s), getting you back on the road as quickly as possible.

Required Form

Customers must complete this form and include it in the box when sending in their order:
ECU Unlock Service Form

Important Notes:

• V8-powered BMWs (N63/S63) require both ECUs to be sent in for unlocking. Unlocking only one ECU will not work.

• Production Date Requirement: This service is for vehicles produced 06/2020 or earlier. If your car was built 07/2020 or later (2021+ models), it requires unlocking via FEMTO.

• A Bootmod3 license is required to properly tune your vehicle after unlocking. You can purchase one here: Bootmod3 License.

Shipping & Liability

• Customers are responsible for shipping their ECU(s) to us and covering return shipping costs.

• We are not liable for DMEs that arrive dead on arrival (DOA), damaged in shipping, or re-locked by a dealer after a software update. If a dealer re-locks the DME, a new unlock service must be purchased.

• This is a mail-in service only—we do not offer DME removal or reinstallation.

• We do not process unlocks on weekends. If your ECU arrives after hours on Friday or during the weekend, it will be unlocked and shipped back on the following Monday.

Get your ECU unlocked quickly and reliably with MidWest Bimmer Supply—your go-to source for BMW performance solutions!