You have the option of either sending in your OEM turbos to be upgraded or paying a core deposit. The core deposit works, by being charged for a new set of oem turbos, which Pure will then upgrade to stage 2 HF. Once you've installed the new pure turbos, you ship back your old OEM turbos and will receive a refund. Core charge is $1700 total.
Doing the core charge allows you to have your car 'down' for less time as you can install right away. Otherwise you need to remove your OEM turbos to get upgraded and shipped back, which can take a few weeks.
