BMW M3 Tuning BMW M3 Tuning specialists, GT race car Preparation
Unit 144c Lydney Industrial Estate, Harbour Road, Lydney, Gloucestershire GL15 4EJ UK
Tel: 01594 841299 Email:

Rolling Road

Simpson Motorsport offers a wide range of rolling road services, from basic power runs to full custom mapping of racecars. With over 15 years of experience of both building and mapping racecar engines our team of staff have a wealth of experience to draw upon.

In October 2007, we invested in a new 2wd Dyno Dynamics rolling road mainly for our own racecar work and the testing / mapping of our supercharged M3's / CSL's. We have since created the most powerful Supercharged M3 CSL in the UK .

The general public are also able to benefit from the following services:

•  Custom mapping – including race-specific ECUs (specialising in Motec, Pectel, MBE and Life Racing products)

•  Custom Chip Tuning – including diesels

•  Car Club Dyno Days

•  Single Dyno sessions

•  Troubleshooting from identifying simple problems to preventing catastrophic engine failure!

For further information on the above services, please contact us and we will be glad to discuss your needs.


Dyno Details

Simpson Motorsport are proud to offer the latest in Rolling Road technology. Our Dyno Dynamics chassis dynamometer measures engine power via the driven wheels in an accurate and repeatable method. We are able to record many different parameters:-

•  Measured BHP at the wheels

•  Calculated BHP at the Flywheel

•  Torque

•  Road speed

•  Engine speed

•  Air fuel ratio (lamba)

•  Manifold vacuum or boost pressure

•  Inlet temperatures

•  OBD interface

•  Electronic knock sensor

•  Full OBD diagnostic testing equipment


Rolling Road Days at Simpson Motorsport

This year sees the launch of Rolling Road Days at Simpson Motorsport!

From October 2008, we are offering the exciting opportunity to bring your friends or car enthusiast clubs to the workshop and enjoy a morning of putting your cars through their paces on our Dyno Dynamics Chassis Dynamometer!

Each car will have three power runs with your best run being printed out for you to take away with you. We will run the Rolling Road in accordance with the world famous Dyno Dynamics “Shoot Out Mode” for more genuine and accurate results.

Our experienced team will also be available to advise you on any necessary engine improvements and modifications to gain the full potential from your vehicle. This advice can be extended into other performance enhancing factors such as brakes, suspension and drivetrain options.

During the day, complimentary refreshments will be available along with the opportunity to view our selection of racecars onsite.

For further information, please contact us and we will happily discuss your rolling road needs. Pricing is dependant on car type and quantity. Please be aware that we are unable to offer this service for 4wd vehicles.


BMW M3 on Rolling Road
Ferrari F40 on Rolling Road
Dyno Services
Computer used for Rolling Road