Turbo Swap? OEM+ Upgrade? VTT™ Can Help You Find the Right Turbo 

Picking the right turbo upgrade isn’t always simple. Some builds call for a full turbo swap that delivers serious top-end power. Others benefit more from an OEM+ style replacement that improves the factory design while keeping the original character of the car. At Vargas Turbocharger Technologies, we offer both options so you can choose the setup that best fits your goals.

Whether you’re looking to improve half-mile performance with a B58 single turbo or you want a refined replacement for a worn factory unit, we’ve built solutions that help you get exactly what you’re after.

OEM+ Options

For many BMW owners, an OEM+ upgrade is the perfect balance between factory fitment and improved performance. Our N54 turbo replacement is a great example. The stock wastegate arm and flapper valve are well known for developing rattle and boost control issues as they wear.

We solve that problem by replacing those components with a 100 percent stainless steel wastegate arm and flapper assembly that’s designed for better durability and consistent boost control. If you want to go a step further, you can also add upgrades like a TD04 thrust system or a forged billet compressor wheel. That billet wheel uses an efficient blade design and extended tip technology to increase airflow by roughly 20 percent compared to the stock cast wheel.

Get More Power with a Turbo Swap

If your goal is maximum horsepower and stronger high-RPM pull, a turbo swap may be the better route. Replacing a twin-scroll turbo with a larger single turbo often means sacrificing a bit of low-RPM response, but the tradeoff is significantly greater airflow and top-end power.

That’s why B58 single turbo upgrades are so popular with drivers chasing better half-mile trap speeds. For the B58 platform, we offer options like the GC, GC-MID, and GC+ configurations. These systems feature an innovative design that allows full external wastegate control through the factory ECU, so you won’t need extra controllers, MAC solenoids, or complicated boost plumbing. The result is a powerful upgrade that still integrates cleanly with the factory electronics.

Parts to Support Your New Turbo

A turbo upgrade works best when the rest of the system can support the increased airflow. Supporting hardware like upgraded intercoolers and performance air filters helps supply cooler, denser air to the turbo and improves overall efficiency.

On certain platforms, reliability upgrades are also important. For example, the factory crank hub on S55 engines can struggle once horsepower climbs above stock levels. Aggressive shifting or frequent high-RPM driving can cause the hub to slip. Our S55 crank hub upgrade uses spline lock technology to create a positive mechanical lock that helps prevent that movement. During development testing, the test rig actually failed before the crank hub slipped, which speaks to the strength of the design.

Protecting Your Investment

Once you’ve upgraded your turbo and supporting hardware, protecting the car itself becomes just as important. Modern vehicle theft often involves accessing the OBD port to clone keys or manipulate the car’s electronics.

Our OBD port lock physically blocks access to that port, helping prevent thieves from connecting to the vehicle’s computer. It installs quickly and adds an extra layer of security so you can enjoy your upgraded BMW without worrying about someone tampering with it.

Find new turbos and the supporting parts for your build at vargasturbo.com