A number of changes have been made to the 1,198cc Testastretta 11-degree V-twin engine to shift both horsepower and torque into a lower and more usable chunk of the rpm band. Revisions to the intake and exhaust ports, and cam timing, plus a full-point bump in the compression ratio to 12.5:1, work with relocated injectors to improve combustion and increase power. The Diavel’s claimed 96.2 pound-feet of peak torque (up 2.2), is reached at 8,000 rpm, but there is substantially more grunt throughout the rev range. At 6,000 rpm, for instance, there’s a notable 4.5 percent improvement in torque. Peak horsepower remains at a claimed 162, but it arrives at 9,250 rpm instead of 9,500 rpm and is more abundant across the rev band.