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M Engineering

M-Tuner Live Map Switching Calibration Suite for McLaren M838T

$4,005.00

SKU: M0DE MTUNER-M838T

In Stock
In Stock
Ships by Jun 11
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The M-Tuner is an at-home OBD flashing utility by M-Engineering, integrating M-Logger features for wireless ECU flashing. It provides on-the-fly Live Map Switching with various stage calibrations (Stage 1 & Stage 2), typically including maps for 91, 93, 100+ Octane, and a Valet mode. It also offers diagnostic and control features such as datalogging, live data, fault clearing, dyno mode enable/disable, auto start/stop disable, left foot braking, kickdown disable, and loud start. Advanced motorsport features like Rolling Anti-Lag and Boost by Gear are available separately. A one-time bench procedure is required, where the ECU is sent to M-Engineering HQ.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandM Engineering
Part NumberM0DE MTUNER-M838T

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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