What were the exact differences you noticed after installing an LSD?
Biggest difference is how it pulls you through corners when accelerating. It's like there's a rope pulling you into the corner as you accelerate. In autocross in long sweepers, could definitely feel it. It's like it's a rwd car kicking the rear out.
Also helped with traction when accelerating, so there's less wheelspin. Not to say it's gone. There's only so much grip available especially in fwd.