254°/264° cams for mild turbocharged or supercharged Toyota 1UZ-3UZ VVTi engines. Still maintains good drivability and throttle response for street cars, retaining full use of the VVTi system. Suits single 58-64mm turbo or twin 48-54mm turbos. Supercharger such as the HTV1900. Improved mid-range power over OEM cams. Great with E85 and similar ethanol blend fuels. No cylinder head clearancing required. Valve spring upgrade required. Kelford Cams recommend KVS1UZ valve spring.