APR 2.0 TFSI Valvelift S3 K04 Conversion System

APR's S3 K04 Turbo Conversion is now available for the Audi B8 A4/A5 & Q5 2.0 TFSI Valvelift engine. APR has developed an excellent entry level turbocharger upgrade for the 2.0 TFSI VL engine by incorporating the OEM turbocharger assembly from the Audi S3 and coupling it with APR's expertly recalibrated engine management upgrade. APR's Engineering Team has developed a powerful and reliable turbocharger upgrade that maintains OEM engine bay appearance and offers up to 155 hp and 139 lb ft of torque over the OEM power output of the 2.0 TFSI.

Reliability, drivability, stealth and enhanced performance that cannot be bested are the highlights of APR's newest OEM-component based conversion package.

APR's engineers have expertly recalibrated the engine management system to allow for nearly flat torque delivery, which results in a smooth linear pull throughout the power band. Keeping the track enthusiast in mind, this conversion package will not result in overpowering of the driveline but will allow for smooth acceleration to easily maintain control while cornering.

The Borg Warner K04 turbocharger selected by VAG engineers is perfectly sized for the 2.0 liters of displacement to allow for stout horsepower numbers as the RPMs increase with no dramatic fall off as redline approaches. This ensures plenty of power in the high RPMs for continued acceleration in the straights and positioning at the healthiest portion of the power band after corner exit.

S3 K04 Conversion Package

S3 K04 Conversion Package

Optional OEM Exhaust Compatibility

While a full exhaust is recommended for maximum power, If you're in a situation where running a high flow exhaust is not permissable, APR has also developed software specifically to use with your OEM Exhaust system. You may switch between high flow exhaust software or OEM exhaust software free of charge any time you alter your exhaust system.

APR's Patented EMCS Technology

Featuring APR's Patented EMCS program switching functionality and DirectPort Programming, APR's Engine Management Calibration for this conversion package allows for a range of Octane and situation specific calibrations to be installed simultaneously on your vehicle's ECU. These programs and features are able to be cycled through via your existing factory cruise control and activated in less than 20 seconds. You will be able to choose 1 to 4 Programs listed below. You will also be able to add APR Security Lockout, APR Fault Code Erase and APR Anti-Theft features.

Program Mode* Peak HP Peak TQ Largest HP Gain Over Stock Largest TQ Gain Over Stock Speed Limit
*It is essential to ensure your vehicle is filled with at least the minimum octane rating for each Performance Calibration when activating the program.
¹Figures measured using Stock Intercoolers, Stock intake and APR RSC Turboback Single Exit Exhaust System.
Stock - OEM Operation 217 HP 264 LB-FT - - 127 MPH
APR 91 Octane (R+M)/2 or 95 RON TBA TBA TBA TBA Unlimited
APR 93 Octane (R+M)/2 or 98 RON¹ 330 HP 339 LB-FT 127 HP @ 6400 RPM 112 FT-LBS @ 5500 RPM Unlimited
APR 100 Octane (R+M)/2 or 104 RON 355 HP 368 LB-FT 155 HP @ 6400 RPM 139 FT-LBS @ 5250 RPM Unlimited
APR Valet Limited Output Limited Output Limited Output Limited Output 70 MPH


APR includes all hardware and software needed for a painless install.

  • APR DPP ECU Upgrade Specific to the S3 K04 Turbo Conversion
  • APR Audi S3 K04 Turbocharger Assembly
  • OEM Manifold Gasket & Nuts (5x)
  • OEM Exhaust Gasket, Bolts (3x), Washers (3x) & Nuts (3x)
  • OEM Downpipe Gasket, Studs (4x) & Nuts (4x)
  • OEM Turbo Oil Gasket
  • OEM Turbo PCV Flange Gasket
  • OEM Engine Oil Gasket
  • OEM Vacuum Line Crimp Clamp
  • OEM PCV Crimp Clamp
  • OEM Crush washers for Turbo Oil and Coolant Connections (10x)

Stealthy OEM Appearance

APR's S3 K04 Turbocharger Conversion System is constructed from OEM parts and appears OEM. It's easy to install and 100% reversible. Every OEM part is fully Plug and Play:

  • Intercooler (Upgrade Recommended)
  • Exhaust (Upgrade Recommended)
  • Intake (Upgrade Recommended)
  • Diverter Valve
  • Positive Crankcase Ventilation Lines
  • EVAP Lines
  • Coolant Lines
  • Oil Lines
  • Turbo Support Brace

NOTE Do not be fooled by claims from lesser tuners, a transmission reflash IS NOT Required to achieve the advertised power claims with an APR ECU Upgrade.

Installation can be performed at APR Dealers and all parts necessary for the installation except for fluids are included. For best results APR highly recommends the APR RSC Turboback Exhaust System.

S3 K04 Conversion - Software Included
Vehicle Market Engine Transmission Drivetrain Part Number Price  
Because of high horsepower and torque ratings, APR cannot recommend use with Audi Multitronic CVT transmissions.
*This turbocharger system requires the included APR K04 Software to function properly. Due to many variations between ECU's, please contact APR prior to purchasing to ensure software is available.
B8 A4 Sedan & Avant N America 2.0 Valvelift TFSI 6MT & Tiptronic Quattro T2100009$3,499.99Buy one Now!
B8 A5 Coupé & Cabriolet N America 2.0 Valvelift TFSI 6MT & Tiptronic Quattro T2100009$3,499.99Buy one Now!
Q5 N America 2.0 Valvelift TFSI Tiptronic Quattro T2100009$3,499.99Buy one Now!
B8 A4 Sedan, Avant & Allroad ROW 2.0 Valvelift TFSI 6MT & S Tronic FrontTrak & Quattro T2100009 Contact Your APR Importer
B8 A5 Coupé, Sportback & Cabriolet ROW 2.0 Valvelift TFSI 6MT & S Tronic FrontTrak & Quattro T2100009 Contact Your APR Importer
Q5 ROW 2.0 Valvelift TFSI 6MT & S Tronic Quattro T2100009 Contact Your APR Importer

Motul Oil, Coolant and Oil Filter


To learn more about Motul, visit our Motul Portal

Part of the APR Turbocharger System install process requires removal of the OEM Turbocharger. During this process, oil and coolant must be drained and should be replaced to offer superior performance and protection. The APR Turbocharger Systems are now complete turn key solutions, including everything you need down to the oil, coolant and oil filter. During checkout you'll be given the option between Motul Specific 502.00, 505.00 & 505.01 5W40 or Motul Power 300V engine oil as well as Motul Inugel Optimal Ultra Coolant and an OEM oil filter. The Premium Motul lubricant package is included at a much lower than retail price point and the costs are listed below.

Motul Oil, Coolant and Oil Filter Options
Description Part Number Price
5 Liters of Motul Specific 505.01, 502.00 & 505.00 SAE 5w40 Oil, Oil Filter & 4 Liters of Inugel Optimal Ultra (Concentrated) - OrganicMO00003$75.00
6 Liters of Motul 300V Power 5W40, Oil Filter & 4 Liters of Inugel Optimal Ultra (Concentrated) - OrganicMO00007$105.00

How to purchase Software separately

APR DealerPlease use the APR Dealer Locater Tool to locate an APR Dealer, confirm availability and schedule an appointment.

Please note vehicle manufacturers issue many ECU part numbers and revisions throughout their vehicle lineup. As such, some ECUs may be temporarily unavailable as new parts and/or revisions are released. If the vehicle’s ECU part number and revision is known, availability can be checked at any APR Dealer.

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Phone: (800) 680-7921 Local Phone: +1 (334) 502-5181 Fax: (334) 502-5180 Address: APR LLC, 4800 US HWY 280 West, Opelika, AL 36801

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