M3 Supercharger Kit - Stage 1

We have finalised our Stage One supercharger kit for the E46 M3 and E46 M3 CSL. Our Stage One kit ups the standard power of the M3 from 343bhp (360 for CSL) to approximately 480bhp (approx 490 for CSL).

The Storm Developments "Stage 1" kit is a quality supercharger conversion for the E46 M3 3.2 S54 engine. This kit has been fully developed and built by Storm Developments UK Ltd and is the first and only supercharger kit designed and produced in the UK for the E46 M3. The aim of the kit was to improve the performance of the already amazing E46 M3 S54 engine whilst maintaining drivability.

Our primary goal was to keep the quality stock feel of the car, retaining its excellent handling characteristics with maximum reliability and improved fuel consumption in mind. Bearing in mind it is still rear wheel drive, Storm Developments have researched the car for considerable time and have initially pushed the car to it's safe traction limit rather than pushing the car to extreme undrivable bhp.

This is a product that has an excellent all round fee and good track day characteristics utilising minimum and easy-to-install high quality parts.

Stage 1 Spec:

• Rotrex supercharger with full standalone oil assembly kit


• Storm Developments alloy intake plenum


• Storm Developments Rotrex supercharger bracket with belt tensioner


• 1 x oil cooler with brackets


• 1 x fan belt


• 2 custom designed and manufactured silicon intake pipes


• 1 custom designed and manufactured silicon boost pipe


• 1 ERL 1S+ water injection kit with dashboard monitoring


• 2 idle pulleys


• 6 x Bosch fuel injectors (oem) with stock spray pattern to retain good atomisation


• 6 x silicone manifold joiner pipes with clips


• 3 x one way check valves


• 1 x air filter


• 1 x bracket support


• 1 x MAF extension cable


• 1 x temp sensor


• 1 x SMG reservoir bottle (SMG models only)


• 1 x Storm Developments software for UK and Euro cars.


• All clips and bolts to put this kit together.

This kit can be fitted by anyone of your choice (we do prefer to speak to and advise the fitting engineer) and offer full advice on any fitting aspects of the kit.