This is a 5.0 liter V10 with natural aspiration. No turbos, no boost, in a not exactly lightweight luxury sedan. The S85 is capable of going door to door and even edging out the new F10 M5. The advantage for the new M5 being that adding power is as simple as getting a tune and raising boost thanks for the turbos.
Whatever side you stand on regarding the naturally aspirated versus turbocharged M motor debate there is no denying BMW built some incredibly impressive past M motors. A 5.0 liter V10 revving over 8000 rpm in a four door sedan? The only other place to get a comparable motor would be from Lamborghini and fitting four of your friends in to go for a ride in a Gallardo does not exactly sound comfortable.
Nice results by BimmerBoost member @KenL, slip below.
Evolve Tubular Headers w/SwainTech ceramic coating
FluidMotorUnion Custom Tune
FluidMotorUnion Custom Exhaust Dumps
FluidMotorUnion Custom Velocity Stacks
RPI GTS Exhaust Sections 1,2 and 3
RPI Oil Cooler
3.91 Ring and Pinion
ESS SMG Upgrade
Voltphreaks VPH900 Battery
Hoosier 315/30-18 Drag Radials, Hoosier 245/45-18 A6
Apex Arc-8 18x11, 18x9.5