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MuchBoost 1.8 TBi/DI T-Jet Upgraded Turbocharger with a Custom Billet Compressor Wheel and Clipped/Larger Turbine Wheel. It is based on an original BorgWarner Turbocharger, which means that the installation is 100%P&P. The turbocharger is meant to work with Alfa Romeo 159, Giulietta, and Lancia Delta III with the 1.8 TBi/DI T-Jet 200-235HP engines.

The turbo delivers up to 200% power (200 extra HP) over the factory specs. It is a great choice for someone looking for a bit extra HP from their daily driver. 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 350HP to 400HP.

MuchBoost 1750/1.8 TBi 350

Upgraded turbocharger with an estimated ~350HP at the crank. List of modifications:

  • Upgraded journal bearings system that allows the turbo to hold more boost,
  • More efficient and larger Billet Compressor Wheel,
  • Clipped and Lightened Turbine Wheel,
  • Genuine BorgWarner compressor housing,
  • Genuine BorgWarner bearing housing,
  • Genuine BorgWarner exhaust manifold,
  • Original actuator,
  • Dynamically balanced,
  • 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.
MuchBoost 1750/1.8 TBi 400

Upgraded turbocharger with an estimated potential of 400HP at the crank. Modifications compared to the 350 option are the same except:

  • Bigger Compressor Billet Wheel,
  • Bigger Turbine Wheel.
Other significant modifications

In order to reach that level of power, you need to adjust your fuel, exhaust, and cooling systems as well.

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

Alfa Romeo 159 1.8TBi – 200HP
Alfa Romeo Giulietta 1.8TBi – 235HP
Lancia Delta III 1.8 DI T-Jet – 200HP

Factory numbers

5304 998 0090
5304 970 0090
5303 988 0149
5303 998 0149
5303 970 0149


1.8TBi/1.8 DI T-Jet

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 turbocharger. 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.




350HP, 400HP

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