2 OWNER~CARFAX~DINAN PACKAGE(Exhaust, ntake & Software Upgrade )~(minor repaired bumper- parking lot incident)~The M5 V-8 is one of the most impressive motors ever built for the street. It is packed with four cams with infinitely variable valve timing, 2 valves, n aluminum block, ight electronically controlled throttle bodies - one for each cylinder - and an 11.0:1 compression ratio, nd it's assembled with a care that results in 394 horsepower from 4.9 liters. It freely revs to 7000 rpm and never feels flat-footed, o matter how low the rev counter.Dinan's latest work of art, e has not only fixed a car that wasn't broken but also sought to perfect a car that everyone considers to be as close to perfection as is humanly possible: