our company

Madman Developments manufacture and distribute engine monitoring systems.

Madman Machine and Engine Monitoring units provide a cost effective monitoring and protection solution against failure of critical functions in any 12 or 24V engine.


Available via worldwide dealers.

Head Office

Unit X, Veni View Park, 547 Heritage View Drive, Muldersdrift, Krugersdorp, 1747

  • White Facebook Icon

© 2018 Designed and maintained by Two Tomatoes.  

GNG Developments

083 546 8687

22 Arbeid Avenue, Strydom Park, Randburg, Johannesburg,

Gauteng, South Africa, 2194

GNG Developments is a family owned and operated workshop in Randburg, Gauteng. Our products are locally manufactured and sold, giving you peace of mind to find the correct parts and performance products for your needs. Whether you are looking for performance engine management systems, installations or simply a power run on your vehicle, we have what you need!