M-Engineering McLaren M-Tuner Live Map Switching Calibration Suite M838T
The M-Tuner is the first, and only, at-home OBD flashing utility! Developed by M-Engineering, M-Tuner integrates all features of the M-Logger and adds them with the […]
The M-Tuner is the first, and only, at-home OBD flashing utility! Developed by M-Engineering, M-Tuner integrates all features of the M-Logger and adds them with the ability to flash anytime, anywhere!
There is never an added cost for original purchasers when updating your calibration to different off-the-shelf stages such as Stage 1, Stage 2, and Stage 2+.
What’s Included?
- M-Tuner Dongle for OBD Flashing
- USB Cable
- M-Engineering maps built for your M840T (see calibration notes)
- On-the-fly Live Map Switching
- M-Engineering Support
Vehicles supported by this version of M-Tuner:
- McLaren 675LT – Calibration Notes
- McLaren 650S – Calibration Notes
- McLaren 625C – Calibration Notes coming soon!
- McLaren 620R – Calibration Notes coming soon!
- McLaren 600LT – Calibration Notes
- McLaren 570S – Calibration Notes
- McLaren 570GT – Calibration Notes
- McLaren 540C – Calibration Notes coming soon!
- McLaren MP4-12C – Calibration Notes
The Following exclusive features are included with the M-Tuner Package for 4.0L McLarens:
- Live Map Switching
- This includes stage calibrations for Stage 1 & Stage 2 vehicle configurations. Remote custom tuning is available for different vehicle configurations as well.
- Performance Stage 1 & Stage 2 calibrations include the following map slots by default:
- Slot 1 – 91 Octane
- Slot 2 – 93 Octane
- Slot 3 – 100+ Octane
- Slot 4 – Valet (Limits boost, load, and throttle)
- *Please get in touch with us at the time of order if you wish to have different map slots.
- Datalogging
- Live Data
- Clear Faults
- Dyno Mode Enable/Disable
- Auto Start/Stop Disable
- Left Foot Braking
- Kickdown Disable
- Loud Start
More custom features for racing and motorsport applications can be added and are located under the M840T Motorsport Tuning Package. Features such as Rolling Anti-Lag, Boost by Gear, etc…
*M-Tuner requires a one-time-only bench procedure, which requires the ECU to be sent to M-Engineering HQ.
Pro Tuning and custom calibrations are also available for those looking to optimize their McLaren for parts configurations or fuels not listed in our map notes.
Disclaimer: You accept responsibility and risks for any tunes and added features by M-Engineering. If you are not the end user of the car, you will be solely responsible for notifying the purchaser and the customer. They also accept these responsibilities and risks, and M-Engineering is not liable. M-Engineering is also not liable for voided warranties due to the installation of our products.
Return Policy: All sales are final and non-refundable. M-Engineering provides specific software calibrations for individual vehicle use and is not liable for misuse or vehicle behavior due to installation errors or mechanical issues. M-Engineering will work one-on-one with individuals to assist with the remote diagnosis of vehicles to our best ability and advise next-action steps as needed. End-users are responsible for vehicle maintenance, the integrity of aftermarket parts installation, and keeping their vehicles up-to-date with their manufacturer’s latest updates and TSBs.
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FREQUENTLY ASKED QUESTIONS
If it's in stock and ready to roll, your order usually hits the road within 1–3 business days.
For made-to-order or specialty items (like carbon fiber parts or custom builds), the turnaround can take up to 8 weeks — perfection takes time.
Either way, we'll keep you updated so you know exactly when your parts are leaving the pit lane.
Absolutely! Once your order ships, you'll receive an email with a tracking link so you can follow its journey from our shop to your doorstep.
If your order ships via freight, you'll get a separate email with a direct link to the carrier's tracking page — easy and stress-free.
Things happen on the road — even to boxes. If your order arrives damaged, snap a few clear photos of the box and product and send them our way right away.
If your shipment is lost, just email or call us — we'll help track it down and guide you through the next steps to make it right.
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1ST CLASS SERVICE
805-267-9762or email Support@FFPerformance.co
Car parts can be a maze — good thing we brought the map. Our team's here to keep things smooth, simple, and maybe even a little fun.
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