[Caspeed]

Originally Posted by Xinshadow

I've had the DSS aluminum unit on my car for about 14 months now. Without getting into any maths, does it make a difference is acceleration feel? Yes, but slight. However in terms of total weight reduction its pretty significant for not a lot of money, and I plan to go with a lightweight flywheel down the road so it made sense.

The biggest change you will see, and I'm surprised no one mentioned this yet, is that it makes heel-toe shifting SIGNIFICANTLY easier, saving some wear and tear on your gearbox over time.

That said you will notice an increase in NVH, with the rubbing noise some others have described, and you may also feel a pulse through the gas pedal when the diff kicks in that the stock shaft kept muted.

Interestingly after going through some winters with both units, the factory one was developing small surface rust spots in a few areas, whereas the aluminum one for obvious reasons still looks fresh as a daisy. I'd be more worried about a factory one becoming unbalanced and damaging the gearbox over time in harsher climates than I would be about the aluminum one doing any harm.

Overall I'd say its a pretty effective cheap mod, if you're willing to work on your driving technique enough to take advantage of it.

Could you please explain to me how a lighter driveshaft can have some effect on heel & toe shifting? If you were talking about a lighter flywheel I would agree. The driveshaft isn't even connected to the engine while doing a heel & toe. Furthermore the driveshaft is rotating at differential speed.