BMW tuner G-Power has announced on our facebook page. Their Stage 1 F10 M5 and F12/F13 M6 kit is good for pushing the V8 bi-turbo S63Tu engine to 640 hp / 575 lb-ft torque (780Nm) .
This is a +80hp / 74lb-ft gain over the new M5 and M6′s factory 560hp / 501lb-ft torque.
The G-Power F10 M5 tuning program offers:
G-Power Stage 1 tune – 640hp/780Nm (575 lb-ft) with VMAX removal. Good for more than 310km/h (192mph)
Quad stainless steel … CONTINUED