VTT BMW F9X M5/ M8 “GC” / “GC+”Turbocharger Upgrade

Description

VTT “GC” and “GC+” Turbocharger Upgrade – BMW F90 M5 & F91-93 M8

GC Supported Power Level: Stock – 1000WHP
GC+ Supported Power Level: Stock – 1200+ WHP

Wheel / Frame Sizing (PTE Equivalent Reference)

Unleash Maximum Performance

Ready to take your BMW F90 M5 or F91-93 M8 to the next level? Skip the core charges, long lead times, and restrictive factory housings—VTT has you covered with our 100% newly cast “GC” and “GC+” turbocharger upgrades.

We preserve what BMW did correctly, while eliminating every OEM limitation: small inlet restriction, inefficient bearing housing oiling, undersized thrust structure, and anything else holding the platform back. Then we incorporate proprietary VTT enhancements and cast all components to OE quality standards.

The result is a true drop-in turbocharger solution capable of delivering 900–1000WHP with the GC, and 1200+ WHP with the GC+, while maintaining near factory spool and full compatibility with OEM oil, water, downpipe, and charge pipe connections.

Key Design Features

• GC is based on Garrett G25-660 frame architecture

• GC+ is based on Garrett G30-900 frame architecture

• All-new castings removing all OEM restriction (no oversized wheels crammed into stock housings)

• Twin-Scroll 310 Stainless Steel Turbine Housing for maximum heat and corrosion resistance

• 9-Blade Mar-M 246 Superalloy Turbine Wheels

• 9-Blade Point-Milled Compressor Wheels designed for maximum airflow with minimal surge

• Direct fitment to all factory oil, water, downpipe, and charge pipe connections

• Redesigned bearing housing oiling and upgraded thrust system

• No core charges—keep or resell your OEM units

• Production units will be stocked for same/next-day shipping (contact for current availability)

• 12-Month Unlimited Mileage No-Hassle Warranty
  (Covers defects in materials/workmanship. Does not apply to units pushed beyond design limits.)

Turbocharger Kit Includes

• 1 Set of VTT GC or GC+ Turbochargers

• 1 Set of VTT Custom Silicone Intake Pipes with Clip-On PCV Bungs

• Optional VTT High-FLOW Filters

Recommended Supporting Mods

To extract full power potential, upgrades such as fuel system upgrades, high-flow intake, downpipes, intercooler, and proper ECU tuning are strongly recommended. Gains are present on stock supporting mods, but maximum output requires appropriate hardware and calibration.

Note: F9X vehicles do not have a dedicated boost venting system from the factory. At elevated boost pressure on upgraded turbos, proper boost venting becomes essential. VTT offers a dedicated F9X BOV kit engineered for this specific platform.

Fitment

• BMW F90 M5 – All Years

• BMW F91/F92/F93 M8 – All Years

Important Note on Boost Limit

F90 platforms have a 38 PSI boost cap. Exceeding this limit voids warranty. Overspeeding turbos—just like over-revving an engine—results in mechanical failure. Logs will be required for all warranty claim review.