APR Tuning Products for the Volkswagen MkIV Jetta

No dates were ever given and many said it would never happen, but APR is proud to release our K04 upgrade kit for the transversely mounted VW's. Our kit includes the K04 turbo, the compressor inlet O-ring, four turbo to downpipe studs, one manifold to turbo gasket, 4bar fuel pressure regulator, and one turbo to downturn gasket. This kit is a straightfoward turbo swap that makes a big difference in the power output of the car.

This kit makes solid gains in both horsepower and torque. With no other mods than an APR Turbo-Back Exhaust, the kit made 242hp/268lb-ft on 91 octane gas, and 245hp/275lb-ft on 93 octane gas. Although the exhaust is not required, it is highly recommended.

If you are currently an APR Stage I or 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 current APR Stage I or II customers for $199 or $699 for new customers.

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.

Carbonio’s line of intakes for VW 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 for longer and stronger.

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

Each Carbonio Kit Includes:

* Aerospace Grade Carbon Fiber Intake Section with Show Quality Finish
* Complete Photographic Instructions
* Ram Air Design Washable Cotton Gauze Filter (of K&N type construction)
* Air Pump Breather Filter (if applicable)
* All Necessary Hardware

APR offers a cat-back exhaust for the 1.8T, VR6, and TDI, and also a downpipe for the MkIV Golf and GTI 1.8T.

APR's Golf/GTI catback exhaust is a stainless steel, mandrel bent system. Our exhaust begins after the factory catalytic converter with a with a 2.5" center pipe which contains a small 3" resonator. The 2.5" pipe continues back to the muffler and two stealth downturn tips. With TIG welding, fully stainless construction, and CNC'ed hangers, you will not find a higher quality system on the market. The price for this catback system without exhaust tips is $769, and $789 with tips.

A 2.5" downpipe for the 1.8T that includes a high flow catalytic converter for the stock turbocharger can be purchased as well for $329. The full turboback system is available without exhaust tips for $969 or $999 with tips.

APR offers a full 3" exhaust for the 1.8T. The exhaust is also available as just a cat-back system.

APR's Golf/GTI cat-back exhaust is a stainless steel, mandrel bent system. Our cat-back exhaust begins after the factory catalytic converter with a with a 3.0" center pipe which contains a small 4" resonator. The 3.0" pipe continues back to the polished muffler and then to the polished tip or tips depending on your vehicle. With TIG welding, fully stainless construction, and CNC'ed hangers, you will not find a higher quality system on the market.

A 3.0" downpipe for the 1.8T that includes a high flow catalytic converter for the stock turbocharger can be purchased as well. A full turboback system is available for the 337 and 20th Anniversary.

Both the APR 2.5" and 3.0" downpipe for the 1.8T include a high flow catalytic converter for the stock turbocharger.

APR is please to present our front mounted intercooler for 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.

The conditions of one test that was performed is as follows: at 20 psi of pressure with a vehicle speed of 70 mph, and an elevation of approximately 500 feet above sea level. Under these conditions the internal flow was measured at 720cfm. Also at those conditions, with an input temp of 240º F, the intercooler was quite effective; cooling the output air to 126º F. While doing this, the intercooler measured a pressure drop of only .58 psi.

Equally as impressive with the APR intercooler was the external pressure drop (the amount of air pressure behind the intercooler) of only 1.01 psi. This helps to allow airflow to other critical parts of the car such as the radiator and A/C condenser. While the internal pressure drop is important, the external pressure drop is often overlooked. Most other intercoolers commonly cause 1.5 to 2.0 pounds of pressure drop, hindering the radiator from effectively doing its job of cooling the engine.

The highlights of the APR Intercooler kit include the following:

* APR Cast End Tanks with Internal Vaning
* Top-Bottom Feed Extruded Aluminum Core
* Mandrel-Bent, Powdercoated Stainless Steel Plumbing
* APR Custom Silicone Intake Hoses
* All Associated Bracketry and Hardware

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!

Our engineers designed a replacement hose of high quality silicone with wire wrapping throughout to ensure no collapse at even the highest boost pressures. We found that simply recreating the hoses in silicone, no matter the density of the silicone, still allowed a collapse to occur. The wire wrapping ensures that not even the slightest collapse will be experienced providing more air to the turbo via the larger diameter of the hose and smoother transitions unleashing hidden power!

APR Motorsport Compressor Inlet Hoses are available in three colors; blue, black, and red. All APR Motorsport Hoses include everything you need for complete installation, including fittings and clamps.

APR is proud to release our newest addition to the APR Motorsport lineup, APR Throttle Body 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 throttle body hose is not rigid enough to prevent flex during high boost situations where getting airflow to the motor is most important. A flexed hose like the factory one creates delayed throttle response and pressure drop.

Our engineers designed a replacement hose made of high quality silicone to minimize flex and get the pressurized air to the motor faster. APR Motorsport Hoses also have smoother transitions to help increase air velocity.

APR Motorsport Throttle Body Hoses are available in three colors; blue, black, and red. All APR Motorsport Hoses include everything you need for complete installation, including fittings and clamps.

APR is pleased to present our Carbon Fiber Strut Tower Brace for Golf/GTI and Jetta 1.8T. The construction and advanced design techniques used in the APR strut tower bar sets it apart from all the others on the market. Utilizing technologies such as adjustable chassis preloading, lightweight carbon construction, and CNC'ed mounting brackets, our strut brace is in a class all by itself. This brace allows you to stiffen the front end of the car to improve initial turn in. This ulitmately creates a better responding vehicle.

Many braces on the market are just a bent pipe with only two mounting holes. The APR Strut Tower Brace uses the highest structural grade carbon fiber for superior strength and looks stunning as well. Also, using four mounting holes opposed to the two on most braces gives the bar extra strength. When looking for a strut tower bar don't settle for less.

APR Carbon Fiber Strut Tower Braces are available with both black or silver carbon fiber bars. If you plan on installing the brace yourself, a special tool is recommended to install the bolt inserts in the strut tower braces.

APR now has an upgraded in-tank fuel pump available for your high horsepower 1.8T. This is the same pump that is sold in our Transverse Stage III and III+ turbo kits.

This pump is a straight drop-in, and uses the same factory pump pickups as your original pump, so there is no need to worry about fuel starvation when cornering.

The APR Motorsport Intake Manifold is a high flow cast aluminum replacement intake manifold for any transverse 1.8T. Features of the manifold include larger runners with smoother transitions, a large barrel designed to reduce turbo lag, pressed and bead rolled vacuum fittings, OEM injector seats, and a 76mm throttle body.

The APR Motorsport Intake Manifold is available in either a black powdercoated finish or an unfinished casting for polishing or custom painting. It is also available with or without the throttle body, making the Intake Manifold flexible for both application and styling.

Applying the Intake Manifold to an APR Stage III or III+ will produce power levels in excess of the stock motor internals abilities and upgraded connecting rods are recommended.

Expected gains when applied to an APR Stage III or III+ are 40-50hp, 20-30ft-lbs and reduced turbo lag of approximately 100-200 rpm’s.

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.

The oil drain line is a -10 line and includes the CNC'ed flanges for both the drain of the turbocharger and the oil pan itself. This line also includes all the necessary hardware for a tight seal.

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.

Show your APR pride with our APR Tuned badges. Our badges have a polished chrome finish to keep a factory-like look over the years. The badge is approximately 2 3/4" long and 1 1/2" tall, and nicely replaces the stock engine designation badge on the back of the car.

Highlights of the APR R1 Diverter Valve Include:

* Diaphragm-Based Valve
o High-Temperature, Nomex-Reinforced Material for Extreme Durability
o Zero-Friction
o No Sticky O-Rings to Maintain and Grease
o No Pistons to get Stuck
o Consistent Performance Year Round
* Flow-Optimized, Investment-Cast Main Housing
* Stainless Steel Vacuum Fitting
* Zero-Maintenance Design
* Built with Finest Materials and Surface Treatments
* Fully Machined and Assembled at APR Headquarters in the United States for Optimal Quality Control

The APR R1 diverter valve was designed to be the ultimate solution to the problem of unreliable factory and aftermarket diverter valves and to be the leader in performance. Although most are of good design, factory diverter valves are built in a very conscious manner and the materials and overall life and reliability suffer. For the performance enthusiast, the diverter valve is an important component whose proper operation is paramount to optimal engine operation.

Enter the R1: APR’s R1 diverter valve addresses all of the reliability problems of the factory-supplied diverter valves and aftermarket replacements and takes performance to the next level. The R1 is a diaphragm-based valve. A diaphragm is the best option for a diverter valve for several reasons. First off, a diaphragm has negligible friction. Piston-based valves have considerable friction from the piston, o-ring, and bore assembly. The lower friction R1 diaphragm equates to faster response and better overall performance. Secondly, diaphragms do not require the periodic greasing that piston-based valves do. Piston-based valves must be qreased periodically (usually every year or sooner), requiring removing the valve from the car, disassembling and reassembling the valve. The APR R1 was designed to be maintenance free for the life of the product. Thirdly, a diaphragm based valve will never have a stuck piston. Piston-based valves periodically incur stuck pistons (especially if the required maintenance schedules are not followed.) Due to the lack of a piston, the APR R1 solves this problem.

The R1 is designed for optimal performance. The main body of the valve is investment cast in an aluminum alloy. By utilizing this casting process in lieu of a more conventional machining process, APR was able to optimize the internal geometry of the valve to provide the ultimate in flow performance. This geometry cannot be created utilizing conventional machining. As such, the APR R1 has much better flow characteristics than other diverter valves. Combined with the low friction diaphragm assembly, this equates to a valve that is truly a performance leader.

The materials used in the R1 are standard setting. The diaphragm is created out of high temperature material and incorporates a Nomex fabric reinforcement layer for enhanced durability and a diaphragm that will never tear. The alloy main body is finish machined at APR and receives a multilayer corrosion resistant and cosmetic enhancing finish. All machining and final assembly takes place at APR headquarters in the United States for optimal quality control and consistency.