Radium FPR RA Fuel Pressure Regulator Kit - Subaru STI 08-21 HSV-Maloo-VT-VF-2004 For up to 8000rpm and

For up to 8000rpm and 30psi boost Kelford Cams recommend valve spring KVS109-1JZ

Single 44/45/46mm Wastegate Flange Mount

Designed to give clearance for a 4" dump pipe and ability to run an air filter and intake pipe if desired

2 x Wastegate Valve Position Inputs (0-5v)

Radium FPR RA Fuel Pressure Regulator Kit - Subaru STI 08-21 HSV-Maloo-VT-VF-2004 For up to 8000rpm andRadium FPR RA Fuel Pressure Regulator Kit Subaru STI 08 21 Complete fuel pressure regulator kit engineered by Radium Engineering for Subaru STI (2008 2021). This comprehensive kit includes the Radium RA series FPR, mounting bracket, and all necessary hardware to replace the restrictive factory fuel pressure regulator with a professional grade adjustable solution. Compatibility Subaru WRX STI (2008 2021) Key Features Complete kit with RA series FPR and