A helical type (torsen) is not sounding at all, and will not cause bad wheel hop and so on, like the clutch type LSDs. On a track clutch plates would be the best thing, for road use torsen is good if the car has EBD as ASR. On the rear of the IM6 performance it would be a good addition I think, no bad comfort effects, just better traction.
I was just about to reply to the same effect. I actually think an LSD, well-tuned, combined with traction control, EBD and ABS are excellent safety aids, especially for high torque RWD vehicles.
All modern vehicles have an e-LSD function to control differential wheel slip these days by applying brakes to the wheel that's lost traction, followed by retarding engine power if the slip continues. While it stops the car from going into a spin, it does slow it down.
I had my Giulia with LSD and semiactive suspension before my current AWD Stelvio. The traction control never kicked in. The LSD alone kept the car under control when the wheel slips. No I wasn't raing. Case in point, just the day after putting that post, the LSD in my Stelvio was called into action.
It was one of the frosty mornings last week and I was pulling out of junction, turning right just outside my residence. So the roads were icy and my tires to as I had just started driving. A car was approaching left but there was enough time and space for me to pulled out. So gave it a little beans to not be a nuisance. The rear started slipping as I turned right and my nose pointed towards the opposing lane (it was a quiet residential road and it was completely clear on this side when i made the manouvre). No drama, feathered throttle little and counter steered, the car continued to move forward and slid smoothly and controllably sideways onto the correct side. All done in a few seconds. What mattered was the LSD (and probably some AWD) allowed the wheels to continue driving to move the car away from approaching traffic while remaining steerable and under control.
One common story of RWD cars is getting stuck pulling out of busy junctions as the wheel slip led to the TC cutting off drive to the wheels.
I don't know how much this would apply to the AWD variants of the IM6. I will post my experience when I get my car!
