To get the best out of anything, you need to know how to use it, and more to the point have experience. (Like driving the car for the first time) I don’t at the moment pretend to know how a diff, be it plated or torque biased will affect the car. As I haven’t got it in yet. But I do know how it changed a 944 for me in the 80’s. In that instance it made it into a complete car. For normal road driving, it felt as original, but as soon as you wanted either to have , shall we say, a ‘spirited ‘drive, or even to ‘play’ it gave you 100% confidence that the car would do exactly what you wanted it to do. As far as understeer was concerned, it had none, as you tended to drive the car on oversteer. How it will affect the working of the PSM computer, again as yet I don’t know. The standard car with PSM ‘on’, is very good and safe, for example when you hit lets say a patch of ice mid corner, it almost does the job of bringing the car back for you. Suppose if you try and drive it with the throttle nailed, and PSM off, you’ll just finish up spinning, like the Stig did when driving the Carrera GT …..Time will tell, ………….and I hope this will be a short time before we find out, as the people that have already ordered the Quaife version, hopefully, will be fitting it within the next month. So watch this space.
To say it’s a waste of money, even for road use, is a little harsh., in my opinion. Lets wait and see.
But to go back to the original Question asked at the start of the post. If Cocodrilo is running 400+bhp with a supercharged Cayman, Trust me, it’ll be as big a transformation as your supercharger was.!!!!

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allan@motordrive.com