Originally Posted by Maximo

actually the OS Speed is less powerful then the regular V-Spec...the OS Speed has a weighted crank which will slow down and smooth out the low end...and it doesn't carry upper power like the regualr Spec..it also makes slightly less torque...the Speed does make slightly more peak HP at 1 point in the powerband............But the OS Speeds only advantage is its smoother and wont spinthe tires as badly on a loose track...... I have both motors as well as dyno results tocback that up....OS Speed is not more powerful then a regular V-Spec... in fact the regualr v-Spec is more explosive and carries better upper RPM HP...