The staggering 4.4L Twin turbo V8 Engine created by BMW, consistently used over and over again in the newer BMW models, holds immense Tuning capabilities and potential. The M5 came from factory with 600 BHP, and leaves our garage with an extra 200 bhp, gains of +33% in BHP. This power is achievable with OPF deletes, High air flow Downpipes (either customized and modified by ourselves or aftermarket DPs), a Custom Narkos ECU and TCU Tuning session, performed on the Rolling Road Dyno, numerous revisions, data logging, Dyno runs and Fine tuning is required. Also cooling hardware such as intercoolers, and cold air intakes go a long way when installed, achieving the 800 HP mark with ease.