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MuchBoost S55 3.0 Twin-turbo Upgraded Turbochargers with a Custom Billet Compressor Wheel and Enlarged Turbine Wheel. They are based on original Mitsubishi turbochargers which means that the installation is 100%P&P. The turbochargers are meant to work with BMW M3, M4 with S55B30 431HP engines.

The turbo delivers up to 162% (269HP extra) of power over the factory specs. It will make your car feel even faster and the power will be a lot more intense. MuchBoost turbo allows you to get more from your engine and enjoy it even more than you’ve been so far.

We have developed 2 modification options that allow you to reach anywhere from 680HP to +700HP.

MuchBoost S55 680

Upgraded turbochargers with an estimated ~680HP at the crank. List of modifications:

  • Precisely machined seal plates and compressor housing,
  • Genuine Mitshubishi compressor housing,
  • Genuine Mitshubishi bearing housing,
  • Genuine Mitsubishi exhaust manifold,
  • Upgraded journal bearings system that allows the turbo to hold more boost,
  • More efficient and larger Billet Compressor Wheel 11+0 blades,
  • Enlarged High-Flow 10 Blades Turbine Wheel,
  • Precisely machined turbine housing,
  • The compressor and turbine wheels are balanced separately, and then the whole core is high-speed balanced using VSR balancing machines at speeds similar to the level seen in the vehicle.

One of our clients managed to get 646HP and 798Nm of torque with the turbos. Please see the dyno graph below:


MuchBoost S55 +700

Upgraded turbochargers with an estimated potential of +700HP at the crank. Modifications compared to the 680 option are the same except:

  • Enlarged Billet Compressor Wheel,
  • Larger High-Flow 9 blades Turbine Wheel.
Example project

One of our clients managed to produce 750HP and 875Nm of torque with our turbos fitted. Dyno graph:

Another example comes from one of our customers, they managed to get 685HP and 930Nm of torque:

The car was equipped with:

  • Upgraded Intercooler,
  • Upgraded DP,
  • Upgraded Intake&Outlet pipes,
  • Crankhub,
  • MuchBoost S55 +700

Another great example, one of our clients managed to produce 752HP and 869Nm @2.15bar, The car was also equipped with:

  • Burger Motorsports Charge pipe,
  • WEngineering WMI,
  • MP-Tech Performance Intercooler,
  • Akrapovic Exhaust System exhaust system,
  • MP-Tech Performance Crank hub.

MuchBoost S55 720

Upgraded turbochargers with an estimated potential of 720HP at the crank. Modifications compared to the +700 option are the same except:

  • 5+5 Turbine Wheel which provides a 10% faster spool.
Other Significant Modifications

To fully utilize the potential of this hybrid turbo, we recommend upgrading i.a. fuel, exhaust, cooling systems, and the clutch. Individual ECU remapping is the foundation.

You might also consider

S55 BMW De-Cat Downpipe F80, BMW M4 F82/F83



A set of gaskets is included with every option you choose!


BMW M2 Competition F22
BMW M3 F80
BMW M4 F82
BMW M4 F83
BMW M4 Competition F82


Factory numbers




OEM number


(If your engine has a different code, please send us a message. We will verify it.)

Matters you should be aware of when placing your order.
  1. The warranty is 12 months without the limit of mileage.
  2. We need about 7 working days to perform and ship the upgraded turbochargers. The parcels in European Union are shipped via DPD for just 25,00 EURO. DHL Express (airplane shipping)  is used for orders besides the EU, it costs 99,00 EURO. The average delivery time is 2-4 working days. 
  3. Every parcel is fully insured.
  4. If you didn`t find the turbo you need, feel free to contact us. We are able to perform many more upgraded turbochargers than you can find on the site. Our development department works permanently on the new models.
  5. Do you have a workshop, are you an influencer or seller of tuning parts? We are open to cooperation by offering discounts and refunds.
  6. During placing your order, please provide information as follows:
  • the engine code,
  • the car model,
  • the stock power,
  • the VIN number

These details are helpful to make the turbo correctly.



680HP, +700HP, 720HP

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