CS/GTS Gearbox Flash

  •  M4 GTS DCT Performance Flash - (MASSIVELY reduced kangaroo gear changes especially in sports and sports+ modes). Big difference putting the power down more! Also changes the tone of your exhaust to sound sportier and deeper on stock untuned engine. On competition pack cars and custom burble remapped tuned cars, your burbles will change to match the M4 GTS burbles.

  • GTS Electronic Power Steering *Stiffens steering for better control/handling with more advanced power assist, especially during hydroplanning.

  •  GTS Traction Control *More slip in MDM before power is cut and allows better traction control settings, improved drifting characteristics.

  • GTS Rear Differential *Improved take off from the line, more control, better cornering. Straight line launch control and take off.

Our Services


My Account

About us

Padmore Street


Email: sales@amsperformance.co.uk

Tel: 01905 724030/29042

​Collection and Drop Off


Mon - Fri: 8.30am - 6pm

Sat: 8.30am - 2pm

Sunday: Closed

Night Drop Off Available



  AMS Garages Limited is registered as a limited company in England and Wales under company number: 09485955

Copyright © 2019 AMS Performance - Part of The AMS Garages Group,