BMW N63 Upgraded Twin Turbo Guide
Previously, we wrote a post about modding BMW N63 engines to make 500+whp on stock turbos. These are already impressive results. However, that’s simply not enough power for some N63 owners. That’s where N63 and N63tu upgraded turbos come into play. Although, upgrading N63 twin turbos does come with additional risks. In this guide, we’ll…