This upgrade is compatible with any BMW with an S55 engine.
The new BMW M3 and M4 get a lot of flack for their unflattering faces, but you can't fault the driving dynamics and performance of these incredible machines. Under the hood, the new S58 engine that powers the new M3 and M4 is a considerable improvement over the outgoing S55 unit, which powers the F8x series M3 and M4 as well as the F87 M2 Competition and M2 CS. However, the S55 engine is easy to modify, making it a popular choice for aftermarket tuning projects. If you want to extract more power from BMW's S55 unit, German tuning company Infinitas now offers an easy solution.
Developed in collaboration with ASA Kompressor, Infinitas' Hybrid Charger is "the first series-manufactured system of its type." It features a combined compressor and biturbo charging, with the compressor connected upstream from the original turbochargers.
This unique design pre-compresses the air before it enters the turbocharger, resulting in a higher boost pressure, reduced turbo lag, and improved engine and throttle response. With the Hybrid Charger installed, BMW's S55 engine produces a "significantly more powerful sound."
Infinitas offers a range of different configurations for the Hybrid Charger. In its lowest configuration, the S55 is boosted to 600 hp and 590 lb-ft of torque, an increase of between 100-190 hp and 147-184 lb-ft depending on the model. This configuration comes with an extended belt drive, a new air duct with a sports air filter, large-volume cast aluminum tubes, a diecast aluminum charge air cooler between the compressor and turbochargers, and a reprogrammed ECU. Pricing for the entry-level kit starts at 6,998 euros ($8,275) plus 2,112 euros ($2,497) for installation.
The tuning company is currently developing four more configurations that will increase the top speed of the M2, M3 and M4 to over 205 mph in the most powerful version. An SK2 kit will increase the S55's output to 700 hp and 663 lb-ft, the SK2CS kit will deliver 800 hp and 663 lb-ft, while an SK3 kit will boost BMW's twin-turbo inline-six to 900 hp and 737 lb-ft.
At the top of the range, the SK3RR will increase the output to an insane 1,000 hp and 811 lb-ft. To help the engine cope with all this extra power, every kit from the K2CS onwards will include reinforced engine components as standard.