VF-Engineering Stage I to Stage III E46 M3 S54 supercharger kit upgrade and tune by Ray West tuning before/after dyno results
This E46 M3 owner decided to upgrade from the VF-Engineering Stage I supercharger system to the Stage III system. Stages 1, 2, and 3 from VF-Engineering use the exact same Vortech blower. The difference is the mapping and associated parts. In this case going from Stage I to Stage III involved adding larger fuel injectors, an air to water charger cooler (Stage I does not feature intercooling), and a custom tune for the hardware courtesy of UK tuner Ray West.
The before and after changes with new mapping, cooling, and more fuel are night and day on the same blower. The Stage I graph shows 440.5 wheel horsepower. After the supplemental parts and new tune the result is 538.4 or just about 100 more horsepower at the wheels.
VF-Engineering has a long documented history of questionable tuning on the E46 M3 platform with their supercharger kits so a custom tune is certainly preferred than going with the canned tune. The result here speaks for itself.
VF-Engineering Stage I:
VF-Engineering Stage III with Ray West custom tune: