About Us

Horsham Developments specialises in tuning high-performance Japanese cars. Established in 2001 by Jez Horsham, the company has grown from producing ECU upgrades into a fully equipped tuning business, capable of performing any work to your car - from a general service through to engine rebuilds and suspension setup.

Our workshops are based near Chieveley, Berkshire, 5 mins from the M4 junction 13 / A34. With over 4000 sq.ft of space, we can offer covered, secure storage while you car is with us.

Our facilities include:

• Suspension alignment lift and ProAlign 4-wheel laser alignment system
• Intercomp corner weight system
• Maha 2 post car lift
• Computer diagnostic equipment and ECU remapping tools
• Engine build room
• All neccessary tools

We have a close working relationship with Surrey Rolling Road, who run a Dyno Dynamics rolling road - arguably one of the best rolling roads in the business.

Horsham Developments aims to give the best customer experience possible. We achieve this by maintaining our skills base at a very high level, keeping our customers informed of progress on work on their car and effective management of any problems or issues.

The people behind Horsham Developments are:

Jez Horsham: Founder of Horsham Developments. Jez has been involved in building and working on cars since he was a teenager. Since then he has graduated from Bristol University with a Masters degree in Physics. He spent some years working for a multinational mobile telecoms company, while developing ECU ugprades for the Nissan 200SX cars in his spare time. He won the 2006 Time Attack Club Challenge in his home-built 200SX. In 2006 he left the corporate arena and has never looked back. H Dev Ltd., trading as Horsham Developments, was formed. The company has evolved and grown over the past few years under Jez's direction, and continues to go from strength to strength.

Carl Day started working with Horsham Developments in 2007. Carl is a fully qualified technician. He was responsible for the build, maintenance and running of the Team Falken drift S14 cars in 2006. Carl carries out most of the hands-on mechanical work on customer cars. He is currently in the process of building what will hopefully be the UKs lightest Mk2 Golf.

Check out our project page for pictures and info on our customer's cars