Description
Elevate your BMW B58 engine's performance with VTT's new B58 "GC," "GC-MID," and "GC+" turbocharger upgrades. These turbochargers are designed to eliminate the limitations of factory housings without the hassle of core charges or long wait times. We start by retaining the excellent design elements of the factory B58 turbo and enhancing them by addressing shortcomings like the small factory inlet area, bearing housing oil structure, and thrust bearing. Our proprietary VTT modifications are cast to OE quality, ensuring superior performance. The GC turbochargers are direct replacements, supporting over 600WHP while maintaining factory spool and connections, including oil, water, downpipe, and charge pipe.
Power Levels:
- GC: Stock - 600WHP
- GC-MID: Stock - 650WHP (TU ONLY)
- GC+: Stock - 800WHP
Key Design Elements:
- All-new castings with factory restrictions removed—no oversized wheels crammed into factory housings. The GC features a cold side and bearing housing only, while the GC+ is a complete unit.
- Full 3″ turbocharger inlet size with an included 3-4″ silicone inlet elbow, removing all factory inlet restrictions.
- 9-blade Mar-M 246 turbine wheel with advanced aero technology for increased flow while maximizing spool.
- 9-blade "point-milled" compressor wheels with the latest aero technology to maximize flow and virtually eliminate surge.
- Direct connection to all factory lines, including oil, water, downpipe, and charge pipe.
- Redesigned and improved internal components, including bearing housing oiling and an upgraded thrust bearing.
- No core charges—new units are sold outright, allowing you to keep or sell your old unit.
- No long lead times—production units are available for same or next-day shipping (check stock levels when ordering).
- Full 12-month unlimited mileage/No Hassle Warranty—if an issue arises, we'll replace the unit, no questions asked.
Turbocharger Purchase Includes:
- 1 VTT B58 "GC" turbocharger
- 1 VTT B58 "GC" 3″-4″ silicone inlet elbow with adapters for factory connections
- 1 3″ hose clamp for silicone inlet elbow
- 1 optional 4″ connector for inlet elbow, compatible with different intakes (order if unsure)
Pair your turbocharger upgrade with complementary upgrades such as fuel system enhancements, intake, downpipe, intercooler, and tuning to achieve the full potential of your B58 engine. Even with a stock setup, the GC/GC+ turbochargers will provide performance gains, but additional parts and tuning will maximize your investment.
Ensure a seamless installation by purchasing the B58 install kit. The GC, GC-MID, and GC+ turbochargers come with a silicone intake tube compatible with the stock airbox and some intakes without modifications. If you encounter fitment issues with specific brands like Injen, consider modifying your setup or adding the VTT MAF housing and filter, which work with the GC inlet hose.
Note: This system removes the PTC heater and will register a shadow code in the DME. Our testing showed this does not trigger a check engine light but will appear if you scan the vehicle. To remove the code, coding is required.
Fitment:
- BMW models equipped with the B58 engine.
DISCLAIMER:
Vargas turbo kits are built to order and typically take 2-4 weeks to ship. Cancellations for any reason before 7 weeks will result in a 20% fee. Once a turbo is built, it will ship within 2 business days. Cancellation of any turbo after it has been built will result in a 50% fee. The same applies to all turbo returns, except for warranty and defect claims, where no fee will be applied. Custom items, such as coated parts, any VTT-FAB single turbo kits, and custom driveshafts, will also incur a 50% restocking fee.
