Stage 1 performance cams for turbocharged 2GR engines. Suits single 58-68mm turbo or twin turbo setups in the 48-58mm range. Suited to engines making 500-700hp. Huge increase in mid-range power compared to OEM cams. Maintains full use of VVT-i for good throttle response. Kelford Cams recommends upgrading the valve spring and retainer to KVS263 for up to 8000rpm and 30psi boost.