I've had the OEM, Steel, and aluminum..different cars but all the same models..I love the aluminum, I had nor have any plans of going all out on my rides, 350-400whp is the max. Main reason I love the AL Flywheel is the faster throttle response, cons are the slowing deceleration of rpm when off the throttle..but get back on the throttle and you forget about the cons you had..hehe..just my opinion, everyones will be different