This camshaft is ideal for near stock engines and street cars, providing ultimate throttle response with VVTi. It offers improved low to mid-range power and fast spool, making it suitable for use with stock twin turbos or a single 54mm-58mm turbo upgrade. It can even use OEM valve spring up to stock boost and rpm limit. However, for those looking to push the limits up to 7500rpm and 30psi boost, Kelford Cams recommends valve spring KVS02.