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TTE Turbo New TTE370 1.8T Upgrade Turbocharger Audi | Seat | Skoda | Volkswagen 1.8T 1995-2009


TTE Turbo

Model #TTE10010

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The Turbo Engineers TTE370 turbocharger is based on a modified OEM Borg Warner K04-064 turbo taken from the 2.0 tfsi platform. Direct bolt on VAG 1.8T 20V engine, the TTE370 is 370PS+ capable.

You can order a new replacement turbocharger or send your own original K04-064 turbo (in good condition) for an upgrade.

Engineered & Enhanced

To construct a TTE370 we ditch the original compressor and employ a larger and more efficient forged billet wheel with extended tip tech and we clip the original K04 turbine. We CNC mill the compressor cover to optimum to match the new compressor profile. TTE CNC modifies the turbo discharge silencer, removing the baffle internals and fitting a new straight-through section, removing any restriction and its function as a noise-canceling device, and so improving the flow, giving less surge and enhancing the sound. The clipping of the K04 turbine is a special TTE grinding process to the turbine blade tips. Curved to alleviate stress from the process. Clipping reduces the blade area thus increasing gas flow and so reducing back pressure and lowering exhaust gas temperatures, allowing safer higher boost levels. This process also gives a secondary advantage of removing some material, lightening the turbine thus reducing the rotational mass improving moment of inertia. We fit our TTE CNC silencer delete, we modify the turbo discharge silencer, removing the baffle internals and fitting a new straight-through section, removing any restriction and its function as a noise-canceling device, and so improving the flow, giving less surge and enhancing the sound.

The original bearing is replaced for a High-performance BorgWarner motorsport 360 deg thrust bearing. Durable at high loads with no loss in transient response.

The actuator used is an uprated sprung OE unit, fitted with our stainless steel reinforced clamps and hardware for trouble-free operation. This also can also be modified/set to customer needs and specifications if required.


Precisely balancing our turbochargers is a key critical factor to become a TTE upgrade unit as longevity and performance are paramount. Good balance improves acoustics also. Subsequent great care is taken with all TTE turbochargers to achieving our balance standards. Firstly parts are balanced at slow speeds up to 2800RPM in multiple planes using our single parts machine, then components are assembled and then the CHRA are dynamically balanced, but this time depending on the application at up to 250,000 RPM in multiple planes using our in house VSR machine to acquire the ultimate equilibrium, to a standard far higher than OEM. Each turbocharger is supplied with a serial numbered balance test result document.


  • Genuine BorgWarner K04-064 Housings & Components
  • TTE Upgrade billet compressor wheel
  • Optimized Compressor Cover Machining Clearances
  • CNC Optimised modified silencer discharge delete
  • CNC Ported Intake Pipe
  • CNC Machined exhaust manifold for 1.8T fitment
  • CNC Adaption hardware for exhaust manifold 1.8T fitment
  • BorgWarner k04 turbine, clipped & lightened
  • Genuine BorgWarner TTE Uprated & Reinforced Actuator
  • Genuine OEM Pierburg N75 Valve
  • Special TTE Reinforced Bearing System
  • 370PS+ Capable
  • Single parts finely balanced then components assembled and core high-speed VSR balanced
  • Supplied with a balance test result document
  • Proven TheTurboEngineers quality
  • Made in Germany
  • This turbo is far from Plug & Play fitment. Fabrication skill and adaption or custom parts are required
  • Audi A3 8L 1.8T 1996-2003
  • Audi A4 (B5/B6) 1.8T 1995-2006
  • Audi S3 8L 1.8T 1999-2003
  • Audi TT 8N 1.8T (225) 1999-2006
  • Audi TT 8N 1.8T (180) 1999-2006
  • Seat Ibiza MK2 1.8T Cupra R 2002
  • Seat Ibiza MK3 1.8T Cupra 2004-2008
  • Seat Leon Typ 1M 1.8T 1999-2005
  • Seat Leon Typ 1M 1.8T Cupra R 2002-2003
  • Skoda Superb B5 1.8T 2001-2006
  • Volkswagen Golf MK4 1.8T 1997-2004
  • Volkswagen GTI MK4 1.8T 1998-2004
  • Volkswagen Polo MK4 GTI 1.8T 2001-2009

Proposition 65

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Vehicle Engine Notes
Audi A3

Audi A4

Audi S3

Audi TT MK1

Volkswagen GTI MK4

Volkswagen Golf MK4

Who Is TTE Turbo?

The Turbo Engineers GmbH (also called TTE Turbo) is a dynamic and highly innovative turbocharger engineering company headquartered in Dachau, just on the outskirts of Munich in Germany. The brand specializes in the production of motorsport upgrade turbochargers to the highest level of quality and greatest efficiency. With strict attention to detail and rigorous testing methods, TTE Turbo offers a comprehensive line of top-notch turbocharger upgrades that deliver proven results. You can count on TTE Turbo to deliver a long-time, reliable, and optimized system for your car to achieve the maximum power and performance possible.

What Does TTE Turbo Offer?

TTE Turbo is focused on the construction of prototypes through the concept stage all through completion with most of the work being done in-house to its own stringent standards. The team places a large focus on converting existing OE turbochargers to newly upgraded specs for enhanced results. During the design and testing process, TTE turbochargers are thoroughly tested and refined to create a final product that emphasizes both performance and long-term reliability.

TTE Turbo is highly regarded in the automotive community as it consults and provides its parts to race teams and well-known tuners all around the globe. The company covers a wide array of automakers, including Alfa Romeo, AMG, Aston Martin, BMW, Ferrari, Ford, Lamborgini, McLaren, Nissan, Porsche, Renault, Toyota, and Volkswagen. 

Upgrade to a TTE Turbo at Vivid Racing

If you are looking for the best-engineered performance turbochargers on the market, TTE Turbo is the way to go. Vivid Racing carries an impressive lineup of parts from The Turbo Engineers, including heat shields and wraps, intake adapters, silencer deletes, performance turbocharger systems, and remanufactured turbos. Should you have any questions about TTE Turbo, please contact us at (480) 966-3040.

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