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BMW DIESEL PERFORMANCE SPECIALIST
IN THE UK

Five-Star Rated Auto Repair Company offering Car Engine Tuning and more

HIGH-QUALITY

EXPERT ADVICE

FRIENDLY SERVICE

ABOUT RMJ DEVELOPMENTS

Welcome to RMJ Developments, we are a custom vehicle shop, specialising in BMW, with over 20 years of experience in the industry. We have a passion for the work we do and specialise in the following areas: automotive solutions, ECU calibrations and vehicle diagnostics. 

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We are located in Reading, UK but our products are available to purchase worldwide. If you have any questions, please don't hesitate to contact us and we will do our best assist you.

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To find out more about our services, please take a look at the section below. You can also find our products by visiting our products page and view our recently completed work on our gallery page.

BMW Performance Package

AUTOMOTIVE SOLUTIONS

If you are looking to enhance the performance of your vehicle, RMJ Developments has over 20 years of industry experience and sells high quality products that can be shipped worldwide.

ECU

ECU
CALIBRATION

We use the latest software and equipment to optimize your vehicle's engine performance and power output, while maintaining reliability and safety. Trust us to provide customized solutions for your specific needs.

Diagnostics

VEHICLE
DIAGNOSTICS

We can quickly identify and troubleshoot any issues with your vehicle, from engine problems to electrical malfunctions. We use cutting-edge technology to provide accurate and reliable diagnostic results.

BMW Specialist

BMW
SPECIALIST

If you require a BMW specialist that is able to provide quality products to further increase the performance of your vehicle. RMJ Developments is here to assist you.

Services

GOOGLE REVIEW

After 170k miles, my E61 535D blew a turbo...
Fantastic service received from RMJ Developments. Once Rob received delivery of the car, he got the ball rolling, meticulously checking the car over, flagging anything up of concern and advising me throughout the process. Very easy going for my benefit but at the same time, kept me up to date with photos and messages. Along with receiving upgraded hybrid turbos a cylinder compression test was completed, gaskets and seals were replaced, glow plugs replaced, a gearbox and engine remap was completed, an upgraded intercooler installed and more. I'm back in my car and enjoying it more than ever. I cannot rate Rob highly enough, very professional, experienced and knowledgeable. Thank you Rob.

Contact Our Team At
RMJ Developments

If you have any questions regarding our car engine tuning, products, delivery, or just have a general question, please contact us and a member of our team will do their best to provide you with the information you require. We look forward to hearing from you.

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