"I have to say after 40 years building and racing cars Turbo-Kits.com has shown a commitment, kindness and overall attentiveness yet to see equal in the aftermarket industry. Doing business with them was by far my best performance buying experience to date." - Dr. Al C., Rhode Island
APR Turbo Kits Include:
- K04 Turbocharger
- Bosch Fuel Injectors
- All Associate Bolts and Gaskets
Many said it would never happen, but APR is now proud to release our K04 upgrade kit for the B6 Audi A4 1.8T. Our kit includes the K04 turbo, the compressor inlet O-ring, three turbo to downpipe studs, one manifold to turbo gasket, four Bosch fuel injectors, and one turbo to cat gasket. This kit is a straightfoward turbo swap that makes a big difference in the power output of the car.
If you are currently an APR Stage I/I+ or II/II+ customer and purchase a K04 upgrade, you will receive all EMCS options for free.
The software for this kit is also available separately.
For Engines: 1.8T Boost: Custom HP: 247 HP Direct Bolt-On: Yes*
*This kit will require a ECU Upgrade
APR Turbo Kits Include:
- APR Cast Inconel Exhaust Manifold
- APR ECU Upgrade
- Garrett Ballistic Series Ball-Bearing Turbo
- Larger APR Mass Airflow Sensor Housing
- Custom Cast Silicone Intake Hoses
- High Flow Fuel Injectors and Fuel Pump
- All Associate Plumbing and Hardware
APR announces the Stage III+ kit, the ultimate turbo system upgrade for the 2002-2005 A4 1.8T. This kit is capable of 340 horsepower and 332 foot-pounds of torque at the flywheel on 93 octane gas, while retaining stock-like drivability.
For Engines: 1.8T Boost: Custom HP: 340 HP Direct Bolt-On: Yes
For a total of 2 programs (i.e. - Stock and Chipped)
$149
For a total of 3 programs
$219
For a total of 4 programs
$289
Security Lockout
$59
Fault Code Erase/Throttle Body Alignment (FCE/TBA)
$59
Anti-Theft System
$199
APR is pleased to present the ultimate ECU Upgrade for the 1.8T engine. After months of long nights and many hours of testing, development and more testing, we are pleased to offer you an ECU recalibration that is second to none. APR's extensive research and development provides you with a powerful ECU Upgrade with no loss of drivability or reliability. Expect huge increases in low-end torque, improved throttle response and a smoother, more powerful top end.
The APR 1.8T ECU Upgrade is an expertly recalibrated engine control strategy that remaps the boost pressure, timing and air fuel ratios to provide smooth and reliable power as if intended by the OEM. APR's ECU Upgrade is developed to work within the OEM and Tier 1 Supplier specifications for engine component stress tolerances and performance specifications. APR's ECU Upgrades are available in octane specific versions to allow you to take full advantage of the fuel quality available in your area. APR's patented EMCS functionality puts the control of the engine's operation at your finger tips and allows for additional features and options to be installed to your OEM ECU.
APR Front Mount Kits Include:
- APR Front Mount Intercooler
- Mounting Bracket
- Silicone Hoses
APR is pleased to present our front mounted intercooler for the A4 1.8T. The construction and advanced design techniques used in the APR intercooler sets ours apart from all the others on the market. Utilizing such technologies as a top-bottom feed core, custom mandrel bent plumbing, and innovative cast endtanks with internal vaning, our intercooler has produced excellent results in testing.
For Engines: 1.8T Boost: Custom HP: N/A Direct Bolt-On: Yes
APR Exhaust Systems Include:
- 2.5" Downpipe
- Full Cat Back Exhaust
- Dual Muffler w/ 3.5" Rolled, Round Tips
- Available in Stealth & Sport
- Install Hardware
APR's B6 A4 Exhaust is a complete stainless steel, mandrel bent, cat-back exhaust. On an A4, the catalytic converter is bolted to the turbocharger and then the exhaust begins with the downpipe. Unlike most other aftermarket exhausts, the APR exhaust includes a 2.5" downpipe. APR has two different exhaust systems available for the B6 A4, the Stealth and the Sport. These systems are a complete package replacing all of the tubing from the OEM catalyst to the polished stainless tips that are acid etched with the APR logo.
For Engines: 1.8T Boost: N/A HP: N/A Direct Bolt-On: Yes
The original, quieter APR Stealth exhaust starts with the downpipe, and then the exhaust continues back to the innovative center muffler, where it splits into dual 2.25" pipes. Each of these mandrel bent pipes goes to its own muffler with a 3.5" rolled, round tip. This exhaust is very quiet and simply changes the tone to a deep, unobtrusive sound.
The APR Sport exhaust is for the no-compromise enthusiast that wants maximum gains and doesn't mind a little extra exhaust note. This system is similar in construction to the Stealth exhaust, but deletes the center muffler.
APR Cold Air Intakes Include:
- Aerospace Grade Carbon Fiber Main
- Carbon Fiber has Show Quality Finish
- Complete Photographic Instructions
- Filter Eliminates Secondary Air Pump
- All Necessary Hardware Included
- Works on APR Stage III+ Cars with Larger MAF
Carbonio's line of intakes for Audi automobiles represent the pinnacle of induction design. Extensive testing has resulted in an intake that maximizes performance in all driving conditions. Power will come on sooner and the engine will pull longer and stronger.
For Engines: 1.8T Boost: Custom HP: N/A Direct Bolt-On: Yes
APR is proud to be the Authorized Distributor for Carbonio Cold Air Intake (CAI) systems. Manufactured from aerospace grade carbon fiber, Carbonio further improves this material by incorporating a proprietary thermal barrier layer in its construction. The result is an exceptionally light and strong part that minimizes intake temperatures. This ensures that the engine optimizes power by receiving the coldest and most oxygen rich air possible.
Benefits of the Carbonio CAI System include:
- Increases Horsepower and Torque
- Improves Throttle Response
- Decreases Turbo 'Lag'
- Flattens Torque Curve (engine is less 'peaky')
- Improves Fuel Economy
- Enhances Engine's Volumetric Efficiency
- Enhances Sound of Turbo Diverter Valve
- Works with All Aftermarket Diverter Valves
- Installs in an Hour (does not require bumper or headlight removal)
- Maintains All Factory Emissions Components
- Fits Both Manual and Automatic Transmissions
- Unique Thermal Barrier Composite Construction Ensures Low Inlet Temperatures
- Fully Compatible and Complimentary with APR Software and Exhaust systems
APR Turbo Compressor Inlet Hose for 02-05 Audi A4 1.8T
APR is proud to release our newest addition to the APR Motorsport lineup, APR Compressor Inlet Hoses for the 1.8T. We designed these hoses to fill a gap in the market where other silicone hoses simply don't perform.
After extensive testing our engineers have found that the OEM compressor inlet hose is not rigid enough to prevent collapse during high boost situations where airflow to the turbo is most important. A collapsed hose creates a huge airflow restriction that robs your motor of potential power!
For Engines: 1.8T Boost: N/A HP: N/A Direct Bolt-On: Yes
APR is proud to release our newest addition to the APR Motorsport lineup, APR Compressor Inlet Hoses for the 1.8T. We designed these hoses to fill a gap in the market where other silicone hoses simply don't perform.
After extensive testing our engineers have found that the OEM compressor inlet hose is not rigid enough to prevent collapse during high boost situations where airflow to the turbo is most important. A collapsed hose creates a huge airflow restriction that robs your motor of potential power!
For Engines: 1.8T Boost: N/A HP: N/A Direct Bolt-On: Yes
Highlights of the APR R1 Diverter Valve Include:
- Diaphragm-Based Valve
- Nomex-Reinforced Material
- Zero-Friction
- No Sticky O-Rings to Maintain and Grease
- No Pistons to get Stuck
- Consistent Performance Year Round
- Flow-Optimized Main Housing
- Stainless Steel Vacuum Fitting
- Zero-Maintenance Design
- Built with Finest Materials
- Fully Machined and Assembled at APR Headquarters in the United States for Optimal Quality Control
For Engines: 1.8T Boost: N/A HP: N/A Direct Bolt-On: Yes
Snub Mount Features:
- Replaces front engine mount
- Enchances Upshifting
- Enchances Downshifting
- Reduces Driveline Shock
- Helps transfer power by taking up exess drivestrain slack.
For Engines: 1.8T Boost: N/A HP: N/A Direct Bolt-On: Yes
APR now offers a complete oil line kit for your 1.8T with a Garrett GT turbocharger. These lines have the correct fittings crimped directly to the stainless line, minmizing the chance for leaks on these critical parts.
The oil feed line is a -6 line that comes with all the necessary banjo fittings and hardware for the 1.8T. It also comes with the correct oil inlet restrictor for the GT series turbos.
For Engines: 1.8T Boost: N/A HP: N/A Direct Bolt-On: Yes
APR now offers a complete coolant line kit for your 1.8T with a Garrett or KKK turbocharger. These lines look great and include all the necessary hardware.
For Engines: 1.8T Boost: N/A HP: N/A Direct Bolt-On: Yes
Stage 1 Kits include:
- APR/Brembo "A" Style Piston
- 4 Piston Caliper
- Available in Black, Red or Silver Calipers
- 2-Piece Floating Hat & Rotor
- 328x28mm Drilled Rotor
- High Performance Brake Pads
- Goodridge Stainless Steel Brake Lines
- Floating Anti-Rattle Rotor Hardware
- Billet Aluminum Brackets with Aircraft Quality Hardware
This is an excellent entry level braking system for those enthusiasts that are serious about show quality look and occasional track day and daily street braking performance. This is an excellent braking system to accompany the APR stage I or II+ engine performance package.
For Engines: 1.8T Boost: N/A HP: N/A Direct Bolt-On: Yes
Stage II Kits include:
- "B" Style Piston
- 4 Piston Caliper
- Available in Black, Red or Silver Calipers
- 2-Piece Floating Hat & Rotor
- 332x32mm Drilled or Slotted Rotor
- High Performance Brake Pads
- Goodridge Stainless Steel Brake Lines
- Floating Anti-Rattle Rotor Hardware
- Billet Aluminum Brackets with Aircraft Quality Hardware
This is an excellent entry level performance braking system for those enthusiasts that are serious about occasional track day and daily street braking performance. This system encompasses even more braking performance than our Stage I system at an affordable price. The 2-piece rotors included in our Stage II system are of a thickness that surpasses the Stage I system's ability to dissipate heat. This is the perfect braking system to accompany an APR Turbocharger Upgrade (where applicable) or Stage II engine performance package.
For Engines: 1.8T Boost: N/A HP: N/A Direct Bolt-On: Yes
Stage III Kits include:
- "B" Style Piston
- 4 Piston Caliper
- Available in Black, Red or Silver Calipers
- 2-Piece Floating Hat & Rotor
- 355x32mm Drilled or Slotted Rotor
- High Performance Brake Pads
- Goodridge Stainless Steel Brake Lines
- Floating Anti-Rattle Rotor Hardware
- Billet Aluminum Brackets with Aircraft Quality Hardware
This is an excellent club racing level performance braking system for those enthusiasts that are serious about track day and daily street braking performance. This is the perfect braking system to accompany an APR Turbocharger Upgrade (where applicable).
For Engines: 1.8T Boost: N/A HP: N/A Direct Bolt-On: Yes
Stage IV Kits include:
- "M" Style Piston
- 6 Piston Caliper
- Available in Black, Red, Silver or Yellow
- 2-Piece Floating Hat & Rotor
- 355x32mm Drilled or Slotted Rotor
- High Performance Brake Pads
- Goodridge Stainless Steel Brake Lines
- Floating Anti-Rattle Rotor Hardware
- Billet Aluminum Brackets with Aircraft Quality Hardware
This is an excellent upgrade over our Stage III braking system for club racing level performance for those enthusiasts that are serious about track day and daily street braking performance that are looking for the extra edge. The larger 2-piece rotors compliment the APR Stage III+ Turbo Upgrade System's power delivery perfectly (where applicable).
For Engines: 1.8T Boost: N/A HP: N/A Direct Bolt-On: Yes
Stage I Kits include:
- "C" Style Piston
- 4 Piston Caliper
- Available in Black, Red or Silver Calipers
- 2-Piece Floating Hat & Rotor
- 332x32mm Drilled or Slotted Rotor
- High Performance Brake Pads
- Goodridge Stainless Steel Brake Lines
- Floating Anti-Rattle Rotor Hardware
- Billet Aluminum Brackets with Aircraft Quality Hardware
This is an excellent performance rear braking system for those enthusiasts that are serious about show, track day and daily street braking performance to accompany either our Stage I braking system for show enthusiasts or Stage III and higher (where applicable) for the track enthusiast.
For Engines: 1.8T Boost: N/A HP: N/A Direct Bolt-On: Yes
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