TTE680 Upgrade Turbochargers - Audi / B5 / S4 / RS4 | TTE10473



Part# TTE10473

*Please verify this item will fit your car. UroTuning does not list fitment vehicles for this item.

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Introducing here what many will love. Designed to give a great blend of power, response, and ease of fitment and our first step utilizing THE 08 turbine housings (k08) for greater flow and power. TTE680 Performance turbochargers can offer big HP with the right hardware and software. These really will offer a great balance of high power and response.

Engineered & Enhanced

TTE680 uses RS4 compressor covers that we CNC machine in house to an optimum clearance to allow fitment and maintain the efficiency of a larger more advanced billet TTE2280X Extended tip compressor wheels, inducer 45.1mm exducer 59.4mm. We also as standard CNC mill the air inlet port on the compressor housing to remove a lip right before the compressor wheel to smooth the transition to the intake pipes to maximize performance.

The 2280X compressor wheel design features promote greater airflow using a low inertia wheel that performs like a wheel of even greater size and mass. Extended tip technology enables the user to have faster spool-up at lower engine speeds while providing high boost with less heat for the powerful top-end performance.

Turbine and shaft are TTE 9BLADE items with a special blade design thus increasing gas flow and so reducing back pressure and lowering exhaust gas temperatures, allowing safer higher boost levels vs RS6 Clipped we did use.

THE 0.8 Exhaust turbine housing (K08) with there larger volute allows much more gas flow and is CNC machined to match the TTE 9blade turbine

Special profile 360 deg high-performance motorsport journal bearing are fitted, to remain durable at higher loads with no loss in transient response.

Actuators used are uprated sprung OE units fitted with our reinforced clamps for trouble-free operation. 


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 serial numbered balance test result document.


  • Genuine BorgWarner RS4 Compressor housings and key components
  • THE 08 Exhaust housings TTE CNC modified (AKA K08)
  • TTE Billet 2280X Compressor geometry 
  • CNC Ported compressor inlets
  • TTE 9Blade Turbines
  • Genuine BorgWarner Reinforced Motorsport bearing system
  • Genuine BorgWarner TTE Modified reinforced and synchronized actuators
  • Installation as original RS4 K04 (with regard to oil and water line, all else see below)
  • 700HP+ Capable 
  • Single parts finely balanced then components assembled and core high-speed VSR balanced
  • Supplied with a balance test result document
  • Proven TheTurboEngineers quality
  • Software recalibration is required 
  • Made in Germany
  • Price shown is for a PAIR of turbochargers 

Please check out our TTE HEAT SHIELD ISOLATION ADD-ON option that’s available.


These turbochargers use K04 RS4 B5 compressor housings RS4 B5 specific turbo intake pipes are required. The turbine housings are RS6 Fitting specific, so flange on downpipe is needed to match. They do not work with RS4 B5 specific downpipes but these can be adapted with use of a RS6 flange.

⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm -

*Please verify this item will fit your car. UroTuning does not list fitment vehicles for this item.

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