I was just wondering exactly what you get with the sport suspension. Is it just stiffer shocks/springs? If I were to upgrade them, would I lose any advantage over a Journey?

Also can you really feel a difference in the LSD in everyday driving?

 

I can only answer the second one (haven't yet seen an answer to the first one): You can't tell when the LSD is actually working, although you'd assume that when the slip light comes on that means the LSD is engaging. I will say that as sensitive as this car is on rear-end traction in corners and leaving traffic lights in the rain, it must be REALLY interesting without it...

 

I have felt the LSD work on slippery roads, but this afternoon in the dry, getting on to a limited access road from a dead stop I nailed it and the LSD caused two neat marks in the road behind me.

No tire squeal, just a bit of equalized slip.

Nothing lit up but me: took a while to stop grinning!

 

LSD's affect performance more in corners than in a straight line by ensuring the inside wheel does not spin unecessarily. That is where you would notice the difference, especially in higher power output cars.

 

No, an LSD provides power to both rear wheels during slippage, as opposed to an open diff which once traction is lost, will only spin one tire.

 

i have a '06 6MT and yes the LSD does help in going uphill and cornering as well as you feel it in wet or icy conditions that both wheels get power to the ground

 

Actually.. it's a bit more of a hand-full with limited slip.
In the rain around a corner for instance, the rear will tend to fish tail as both tires will spin, An open diff will just get the inside wheel spinning and you will not as easily spin out.

Leaving off the line will get you more traction for sure.. but the real benefit is in the corners. You can enter a corner hard and power out of the corner with traction. On an open-diff, the inside wheel will spin and you lose traction and speed.