Never been on R-Techs.
James' pulled 378 bhp on JKMs and 401 bhp on R-Techs.
For a K04 car to achieve 378 bhp on JKM's rolling road is quite astonishing (imo)
It was de-tuned to 378bhp on R-Techs rollers (LPFP couldn't cope properly). Made exactly the same on JKM's rollers as R-Techs.
Not sure if James has done the LPFP yet, that would allow him to run the full 400bhp.
Didn't Steve P run his big turbo at JKM and make less power than James?