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JM Performance workshop in Swindon specialising in vehicle tuning and ECU remapping process

Popular Services

JM Performance – Your Trusted Partner for Automotive Excellence

At JM Performance, we specialise in performance tuning, ECU remapping, and vehicle upgrades designed to unlock the full potential of your car. Drivers across Wiltshire, Bristol, and Oxfordshire choose us for our commitment to safety, precision, and complete satisfaction. With years of hands-on experience and industry-leading knowledge, we’ve built a strong reputation as one of the region’s most trusted performance specialists.

We offer a wide range of performance solutions to help you get the most out of your vehicle. Our most popular services include:

Fully equipped tuning garage in Wiltshire providing performance upgrades for car

EGR & DPF ADJUSTMENT

RECALIBRATION & DELETION

Need an alternative to EGR / DPF replacement?

(For track use only.)

Live diagnostics during car remapping session in Swindon garage

SPEED LIMITERS

ADJUSTMENT & REMOVAL

VMAX is the maximum restriction of speed on a vehicle, this can be modified to suit. Especially useful for commercial vehicles.

ADBLUE

BESPOKE SOLUTIONS

ADBLUE Countdown Removal, the ultimate solution for those seeking to eliminate AdBlue systems beyond economical repair. (For track use only.)

REMAPPING

VEHICLE PERFORMANCE

Improve your vehicle's power, economy/ MPG or towing torque with our tailored solutions. Expertly written for milage and modifications.

ECU CLONE

NEW & USED

Adapt new and used control modules to vehicles including damaged data retrieval from damaged ECU's. Clone the immobiliser data.

ONLINE CODING

BESPOKE SOLUTIONS

From retrofit cruise control to coding of new modules. We offer a variety of unique bespoke specialist solutions which are tailored to suit your needs.