More efficient m62s (eaton's TVS™ design)
 

Check out the compressor maps on the second page it's like night and day.
info here
Maybe, by a long shot this could work on the S1L67?

Looks like a loss of low-end torque, but a gain on the high end.

Not any time soon though. And not in the budget for the average S1 owner by any stretch of the imagination.