About MJ Performance
MJ Performance specialises in engine remapping and optimisation in Finistère, Brittany. Maps are written in-house and can include more torque and power, lower fuel use, Super Ethanol E85 running without an add-on box, and work on vehicles that already have performance parts. Power and torque can be measured on an onboard Dynoroad rolling road.
Services and facilities
Vehicle modification and tuning
- ECU remapping
Workshop equipment
- 2WD dyno
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