Stage 1 Upgrade Turbocharger for N63 N63TU1 V8

The Pure Turbos Stage 1 Upgrade Turbo is engineered to enhance the performance of BMW's 4.4L N63 and N63TU1 twin-turbocharged V8 engines. This upgrade replaces the factory turbochargers with units featuring billet compressor wheels and improved turbine internals, significantly boosting exhaust efficiency and durability. Each turbo undergoes VSR high-speed balancing for smooth operation and utilizes OEM housing for a direct, plug-and-play installation. This turbocharger upgrade is capable of supporting over 650 wheel horsepower (WHP) and can operate safely on stock tuning or off-the-shelf (OTS) maps. However, custom tuning is recommended to fully unlock its performance potential, with actual results varying based on supporting modifications and fuel type. The product comes with a 1-year unlimited mileage warranty. Buyers have options for ordering: either pay a refundable core deposit upfront and return the original turbo(s) within 60 days for a full refund, or send in the original turbos first to avoid the deposit, with production lead time beginning upon receipt of cores. Important note: all accessories and hardware must be removed from the core turbos before shipping. This turbocharger upgrade is intended strictly for off-road and closed-course competition use only. It is not legal for use on public roads or emissions-controlled vehicles, and users should check local laws before installation. The direct fitment applies to various BMW models including the 550i, 650i, 750i, X5 M, X6 M, M550i, M850i, X5 M50i, X6 M50i, and X7 M50i, generally covering model years from 2008 to 2022 depending on the specific model.