Mk6 hpfp is good for up to ~ 400bhp as it is so need to uprate internals.
Not on the CDL Engine fitted on the MK6 Golf R.
The 6R and Ed. 35 have a CDL engine, which is a TFSI.
@b7unr: Your engine needs an uprated HPFP (complete unit from Loba or APR; uprated internals from VIS Motorsports or Autotech), uprated IC (Wagner, Peron, Airtec stage 2, do88), TBE with 3'' (decat or really big sports cat like the BCS Powervalve), uprated clutch and a CAI to reach 380 BHP with Shell V-Power or Tesco 99. No need to upgrade conrods or pistons for 400 BHP.