I don't have a 2.5 but I was riding in one today('06 - 150 hp version) . I noticed it's got a lot of torque, which is awesome, but the redline was at a relatively low 5700 RPM. The tach, however, goes all the way to I think 8000 RPM.
Sure there's the C2 kit to make lots of power with FI, but...