Horsham Developments

Horsham Developments www.h-dev.co.uk You can also text or WhatsApp on 07425 231580

28/06/2026

Just built an exhaust for Alex's drag car. Its quite loud...

Track season is well underway now, and preparation makes all the difference - especially in this hot weather.Engine cool...
24/05/2026

Track season is well underway now, and preparation makes all the difference - especially in this hot weather.

Engine cooling, brake fluid, pads, geometry and proper setup can completely change how a car performs and feels on circuit — as well as helping it survive the drive home.

We offer a range of fast-road and track-focused upgrades, servicing and setup

22/01/2026

180SX in for external wastegate fitting, injectors and mapping. 307bhp on a GT28R at 1 bar. Very clean chassis - not bad at all for a 33 year old car.

Just had our M2 comp on the dyno - running Milltek turbo back system with off the shelf Bootmod3 map. We'll be swapping ...
17/01/2026

Just had our M2 comp on the dyno - running Milltek turbo back system with off the shelf Bootmod3 map. We'll be swapping the standard turbos out for hybrids soon, along with custom exhaust system and custom mapping - should do well over 600bhp

We're fitting this Lotus with a danST individual throttle body kit and ECU Master engine mangement. The power run shown ...
19/12/2025

We're fitting this Lotus with a danST individual throttle body kit and ECU Master engine mangement. The power run shown is the before power figure from the 2ZZ engine - it already has a free flow exhaust and piper cam. Once the throttles and ECU are fitted we'll get it back on for tuning and see what we can get out of it.

We'll be closed from 24th December for Christmas holidays - back open on the 5th January 2026
17/12/2025

We'll be closed from 24th December for Christmas holidays - back open on the 5th January 2026

11/12/2025

One of the highest powered normally aspirated 370Zs we've had in. We fitted Z1 intake, ISR headers, cats and then remapped using ECUTek software.

Audi S3 in for a custom exhaust build - 3" stainless cat back going into a twin exit silencer and oval tips.
05/12/2025

Audi S3 in for a custom exhaust build - 3" stainless cat back going into a twin exit silencer and oval tips.

A lovely 370Z we had in for some upgrades:Z1 intake kitZ1 front and rear brake kitISR headers and high flow catsH-Dev cu...
04/12/2025

A lovely 370Z we had in for some upgrades:
Z1 intake kit
Z1 front and rear brake kit
ISR headers and high flow cats
H-Dev custom remap using ECUTek software

Address

Unit I3, Gidley Farm, Chieveley
Newbury
RG208TX

Opening Hours

Monday 9am - 5:30pm
Tuesday 9am - 5:30pm
Wednesday 9am - 5:30pm
Thursday 9am - 5:30pm
Friday 9am - 5:30pm

Telephone

+441635247477

Website

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