MuchBoost M271/M274 Upgraded Turbocharger with a Custom Billet Compressor Wheel and an Enlarged High-Flow 9 Blade Turbine Wheel. It is based on an original IHI turbocharger, which means that the installation is 100%P&P. The turbocharger is meant to work with Infiniti QX30, Q50, Q60, Q70, Mercedes C, E, CLC, GLC, SLK Class with M271/M274 1.6, 1.8, 2.0 129-245HP engines.

The turbo delivers anywhere from 106 to 221 extra HP over the factory specs. It is a great choice for someone looking for a more sporty feel and more power. 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 250+ to 350 HP.

MuchBoost M271/M274 250+

Upgraded turbocharger with an estimated ~+250HP at the crank. Listo of modifications:

• Precisely machined seal plates and compressor housing,
• Genuine IHI compressor housing,
• Genuine IHI bearing housing,
• Genuine IHI exhaust manifold,
• Upgraded journal bearings system that allows the turbo to hold more boost,
• More efficient and larger Billet Compressor Wheel 6+6 blades,
  
• Clipped and Lightened genuine Turbine Wheel,
• 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.

An example project that reached 284HP at the crank and with the stock exhaust system:

MuchBoost M271/M274 300+

Upgraded turbocharger with an estimated potential of +300HP at the crank. Modifications compared to the 250+ option are the same except:

• Enlarged Billet Compressor Wheel,
• Larger High-Flow 9 blades Turbine Wheel,
• Precisely machined exhaust housing.
• Exhaust housing HEAT SHIELD.

Here’s an example that reached 307HP at the crank with Turbokits Intercooler and Forge Motorsport BOV adapter, with stock downpipe:

310HP with modified exhaust:

Another project with great results from a C200 W205. It managed to produce 314HP and 593Nm of torque. The car had custom ECU and TCU tunes. Dyno graph below.

The next project was done on a W213 E300. It produced 316 HP and 384 Nm of torque at the wheels. The car was also equipped with a custom intake and outlet.

And finally, a project with 351HP with WMI:

MuchBoost M271/M274 350

Upgraded turbocharger with an estimated potential of 350HP at the crank. Modifications compared to the 300+ option are the same except:

• Even Larger Billet Compressor Wheel.

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

M274 Mercedes Downpipe De-Cat/Sport-Cat W205 C200, C250, C300

Example project

Another great project with the M274 engine fitted with our turbo. This time it managed to produce 362HP and 516Nm of torque. The car was also equipped with:

Custom Beast Garage Intercooler,

Custom Beast Garage Inlet & Outlet Pipes,

Full RES exhaust System,

Snow Performance WMI.

Dyno graph below.

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

(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 around 2 weeks to perform and ship the upgraded turbocharger. In some complicated cases, it may take up to 3 weeks. Please realize that the turbo upgrades require precision. Especially, the machining process takes a lot of time. We don`t cut the corners. Thank you for understanding. The parcels in the European Union are shipped via DPD for just 25,00 EURO. UPS is used for orders besides the EU, it costs 99,00 EURO and 49,00 to the UK (DHL). The average delivery time is 3-5 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.