Hi,
Yes, Very common in the Porsche/bimmer/acura world. Lot's of hype, but I've never seen an improvement on a system that didn't previously have very aged stock wires.
Not useless, but largely pose-value.
Especially at the low rpms and short wire runs our S motors have.
To be fair, the physical quality is top notch, but the benefit is highly questionable. (none of the serious Pcar track-day or auto-x guys I know run them, yet a fair number of the show-car guys claim they've of great benefit -- draw your own conclusion
regards
roger