Pulley Kits

We supply pulley upgrades for supercharged cars i.e. Jaguar, Range Rover, Mercedes AMG Kompressors, etc. When changing a pulley on a supercharged vehicle to raise the boost, the ECU has to be reprogrammed because the stock ECU file was created for a stock pulley (When replacing a pulley by itself the timing will be thrown off).

Pulley Kits For Non Supercharged Cars

Being in the industry since 1991 we (like all the top tuners in Europe) have never seen the benefit or any type of gain with a pulley upgrade for a naturally aspirated vehicle.

ECU Tuning Group will only recommend upgrades that actually work.