Posts Tagged ‘vw tuning’
APR 2.0T FSI Stage III GTX Turbocharger System & Upgrade Kit! (EA113-K03 Vehicles)
Written by dion on May 14, 2013 – 2:40 pm -Achtuning presents the APR 2.0T FSI Stage III GTX Turbocharger System & Upgrade Kit! (EA113-K03 Vehicles)

Building upon over a decade’s worth of experience with turbocharged Audi and VW engines, including over half a decade with direct injected engines, APR’s Engineers have taken the 2.0T FSI to ground breaking levels of performance without compromise.
APR has introduced the 2.0T FSI Stage III GTX Turbocharger System. Producing over 405 horsepower on 93 (R+M)/2 octane and 449 HP in racing configurations, Stage III GTX places the 2.0T FSI’s accelerative performance in the same league as that of large V8 supercharged muscle cars and sub $400,000 exotic sports cars.
The new APR Stage III GTX Turbocharger System represents a large leap in technology over our previously available GT Turbocharger System. The new system’s response is much quicker, spooling hundreds of RPM sooner thanks to the latest in Garrett turbocharger technology and advancements in the ECU Upgrade. Further refinement of the fueling system increases the vehicle’s reliability and drivability to levels only matched by the OEM. A substantial increase in horsepower and torque results in roughly a 30-50 HP gain in the area under the curve over the previous system. As you hear a new exotic growl from your exhaust system, expect exhilarating g-force levels sure to put a huge grin on your face!
To learn about many component included in the APR Stage III GTX Turbocharger System, see below. For previous owners of the older APR Stage III GT Turbocharger System, an upgrade package is available.
APR Stage III GTX Components
Turbocharger
At the heart of Stage III GTX is a GTX2867R turbocharger, consisting of the latest technologies from Le Mans’ winning turbo manufacturer, Garrett Honeywell. The internally gated unit features a fully-machined, ten-blade billet compressor wheel and a dual ball bearing oil and water-cooled CHRA. APR’s Engineers spent countless hours testing turbine inlet and A/R sizes in order to decrease turbocharger lag without negatively impacting peak power. The newly developed compressor housing utilizes anti-surge porting, which greatly complements the lightning fast spool characteristics of this unit and grants APR’s Engineers the ability to deliver massive levels of torque inducing boost pressure, even in the lower RPM range.
Each turbocharger unit is assembled and clocked in house at APR with the necessary brackets to ensure proper wastegate fitment and orientation. Each wastegate is then calibrated for precise operation and control to ensure seamless integration with the expertly recalibrated OEM engine management system.
APR Stage III GTX Software

The factory Bosch MED 9 engine management system is responsible for proper operation of the engine in all conditions. With built in compensational data for environmental variables and varying load conditions, the factory ECU is far more complex and intelligent than units found in other vehicle makes and marks.
With the significant amount of changes included in the APR Stage III GTX Turbocharger System, APR’s Engineers spent months recalibrating the engine management system to operate smoothly as if intended by the OEM. Thanks to APR’s incredible proprietary calibration suite, data logging software and full access to the coding structure of the ECU, appropriate and intelligent changes are made to ensure flawless drivability and excellent performance without compromise.
APR’s EMCS program switching technology puts control of the ECU in your finger tips allowing you to access modes for standard pump fuel, high output race fuel and even reduced output valet modes to protect your vehicle against improper use by other individuals. This technology is patented by APR and is found nowhere else in the world. It’s Performance Without Compromise only APR can deliver!
*Note* Exiting APR Software customers will receive a fully loaded ECU. New Customers will receive 1 program and may purchase additional programs al la cart. Please check for EMCS availability.
Exhaust Manifold

Attached to the turbocharger is APR’s investment-cast, super alloy, nickel-chromium-based Inconel 625 Manifold featuring APR’s Sequential Exhaust Pulse runner lengths. Unlike hand welded tubular manifolds, Inconel is a very high temperature resistant material designed to withstand extreme exhaust gas temperature changes without expanding, contracting, melting or cracking under stress. This material is typically found only at the highest levels of professional motorsport racing where reliability is essential to success.
Investment-cast Inconel features heat retention characteristics which aid in turbo response by keeping exhaust velocity high. Ensuring each exhaust pulse arrives at the collection point without collision is critical to producing lightning fast response and immediate torque delivery. Using 3D modeling and computational fluid dynamics software, APR’s Engineers designed varying short runner lengths calibrated to deliver sequential exhaust pulses without collision. A reduction in backpressure from the high flow design directly enhances power delivery.
Each manifold is investment-cast in the United States of America and machined in house on APR’s CNC machines to ensure high casting tolerances, repeatable results and strict quality control. The thick casting material reduces unwanted exhaust noise leaving behind a powerful and exotic growl.
All of these characteristics result in a manifold designed without compromise backed by a confidence inspiring lifetime warranty.
Induction and Charge Piping

Wire reinforced, multi-ply silicone hoses provide an unrestricted path for airflow to enter and exit the turbocharger at over 1,000 kilograms per hour. The ultra rigid design ensures boost and vacuum piping will not swell or collapse causing leaks and restrictions in the induction and charge piping system supporting boost response and turbo recovery. Each hose is engineered to fit properly into the vehicle’s engine bay with all necessary emissions and reference ports securely affixed.

APR’s Easy-Flow Silicone Hose design features stepped mounting surfaces for smooth transitions from one pipe to another. Traditional designs simply sit on top of each other, often resulting in a disruptive airflow path. By using the stepped design, hoses fit properly without airflow restrictions, resulting in the most ideal path for moving air through the turbocharger and into the engine.
Turbo Outlet Pipe

To provide unrestricted and smooth airflow from the turbocharger to the intercooler, the APR Stage III GTX Turbocharger System includes a cast enlarged turbo outlet pipe to properly deliver the additional airflow from the larger turbocharger.
Mass Airflow Housing

The vehicle’s engine management relies on load calculations to accurately control the engine. Calculations are made by measuring airflow across the Mass Airflow Sensor and this is a critical component of the APR Stage III GTX Turbocharger System.
The small and restrictive factory unit is removed and replaced with the much larger housing. To ensure accuracy, APR’s MAF housing is cast in the United States of America and CNC machined in house at APR to ensure repeatable results. The long, precision-machined housing features a honeycomb airflow straightener to further aid in accurately reading airflow levels. Simply enlarging the MAF housing is not permissible without accurate adjustments to the factory engine management system, which is included with APR Stage III GTX Turbocharger System.
Oil and Coolant Lines

APR’s oil and coolant lines are specific to the vehicle’s Stage III GTX System and provide years of leak free operation. The oil lines feature flexible braided stainless steel with CNC mandrel bent hard-lines for specific and clean hose routing as if intended by the OEM.
Low Pressure Fuel Pump System

The APR Low Pressure Fuel Pump System is a complete, OEM style, PWM controlled drop in fuel pump and controller solution designed to fit cleanly in the OEM location. The upgraded pump provides adequate low-pressure fuel to the APR High Pressure Fuel Pump to support the power levels produced by the APR Stage III GTX Turbocharger System.
High Pressure Fuel Rail Valve

The factory vehicle’s gasoline direct injection injectors require higher than factory fuel rail pressure to achieve targeted air fuel ratios under high load, wide open throttle operation. APR’s Low Pressure Fuel Pump delivers the desired volume of fuel to the APR High Pressure Fuel Pump, which provides increased fueling headroom over the factory unit. However, the factory High Pressure Fuel Rail Valve limits maximum rail pressure below the desired level. The included APR High Pressure Fuel Rail Valve is calibrated to increase the maximum rail pressure to levels necessary for proper operation.
In doing so, APR’s able to support far higher horsepower levels than achievable on the existing APR Stage III GTX Turbocharger Systems without the need to alter the factory, correct spray pattern, injectors. This results in smoother part throttle operation, factory-like cold starts and fewer unburnt hydrocarbons emitted from the tailpipe under all conditions compared to other fueling options.
Cast Downturn and Downpipe

The GTX2867R internally gated turbocharger unit features a Garrett five-bolt flange, which differs from the OEM turbocharger flange. To support this design, the APR Stage III GTX Turbocharger System includes cast stainless steel exhaust downturn and downpipe, which mates directly to an APR Midpipe, Downpipe or Turboback Exhaust System.
Nuts, Bolts, Gaskets, Washers, Clamps, Fittings, etc

Every APR Stage III GTX Turbocharger System includes all necessary components for a complete install.
Bracketry

No matter how small the part, each piece of the APR Stage III GTX Turbocharger System oozes with quality evident in pieces like the Stage III GTX’s laser cut ancillary brackets and carriers.
Spark Plugs

Proper temperature range spark plugs are included with each APR Stage III GTX Turbocharger System.
Power Output:
Stock – (VAG’s Published Ratings)
200 HP
207 FT-LBS of Torque
Stock – (APR’s Rating on 93)
218 HP
222 FT-LBS of Torque
APR Stage III GTX – 91 (R+M)/2 or 95 RON
386 HP
346 FT-LBS of Torque
+187 HP Gain over Stock at 7100 RPM
+140 FT-LBS Torque Gain over Stock at 6800 RPM
APR Stage III GTX – 93 (R+M)/2 or 98 RON
405 HP
363 FT-LBS of Torque
+205 HP Gain over Stock at 7100 RPM
+153 FT-LBS Torque Gain over Stock at 6750 RPM
APR Stage III GTX – 100 (R+M)/2 or 104 RON
449 HP
376 FT-LBS of Torque
+259 HP Gain over Stock at 7100 RPM
+192 FT-LBS Torque Gain over Stock at 7100 RPM
Dyno Charts:


More Dyno Charts:
- APR Stage III GTX – 91 (R+M)/2 or 95 RON – At the Wheels
- APR Stage III GTX – 91 (R+M)/2 or 95 RON – At the Crank
- APR Stage III GTX – 93 (R+M)/2 or 98 RON – At the Wheels
- APR Stage III GTX – 93 (R+M)/2 or 98 RON – At the Crank
- APR Stage III GTX – 100 (R+M)/2 or 104 RON – At the Wheels
- APR Stage III GTX – 100 (R+M)/2 or 104 RON – At the Crank
Application Guide:
2.0T FSI & 2.0 TFSI – EA113 – Transverse – AXX, BWA & BPY
- Audi A3 (MK2) – 6MT & S-Tronic
- Audi TT (MK2) – 6MT & S-Tronic
- Volkswagen Eos – 6MT & DSG
- Volkswagen Golf/GTI (MK5) – 6MT & DSG
- Volkswagen Jetta/GLI (MK5) – 6MT & DSG
- Volkswagen Passat (B6) – 6MT & DSG
Part Numbers & Prices (Prices applicable to the USA only):
T3100051 – $6,649.99 – APR Stage III GTX Turbocharger System – Including Software
T3100048 – $2,674.99 – APR Stage III GTX Turbocharger System – Including Software – (Upgrade System only. See online store for details.)
Existing APR software customers will receive a fully loaded ECU. New customers will receive one program and may purchase additional programs al la cart. Please check for EMCS availability. Software only included in upgrade kit for customers previously equipped with an APR Stage III GT2871R Turbocharger System.
Motul Oil, Coolant and Oil Filter

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 Specific Lubricant Install Package

- 5 Liters of Motul Specific 505.01, 502.00 & 505.00 SAE 5w40 Oil
- 1 Oil Filter
- 4 Liters of Inugel Optimal Ultra (Concentrated) – Organic
MO00002 – $70.00
Motul 300V Lubricant Install Package

- 6 Liters of Motul 300V Power 5W40
- 1 Oil Filter
- 4 Liters of Inugel Optimal Ultra (Concentrated) – Organic
MO00006 – $100.00
Tags: 2.0T FSI tuning, 2.0t tuning, achtuning, APR, audi, audi tuning, fsi tuning, go apr, GTX, gtx turbocharger, GTX2867R, low pressure fuel pump, lpfp, ngk, stage 3, VW, vw tuning
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High-Flow, CNC-Ported, Performance Cylinder Head for the 2.0T FSI (EA113) Engine
Written by dion on May 14, 2013 – 2:30 pm -
Achtuning is pleased to announce the release of APR’s Stage 3+ High-Flow, CNC-Ported, Performance Cylinder Head for the 2.0T FSI (EA113) Engine. APR’s engineers have optimized the FSI head with proprietary, computer-controlled porting conducted on APR’s in-house 5-Axis Centroid CNC machine, their engineers have increased airflow by 17% on the intake ports and an additional 12% on the exhaust ports. The engine’s boost-to-airflow ratio is reduced by roughly 10% while also reducing intake air temperature and alleviating backpressure. As a result, the spark knock threshold is extended up to 7 degrees allowing for a substantial increase in power.
- CNC Ported for Precision and Repeatability
- Airflow Increased 17% on Intake Ports
- Airflow Increased 10% on Exhaust Ports
- Boost-To-Airflow Ratio Decreased 10%
- Intake Air Temperature Decreased
- Backpressure Alleviated
- +70 HP on 93 (R+M)/2 Fuel over Stage III
- +126 HP on Race Fuel over Stage III
- Up to 430-450 HP on 93 Octane (GT / GTX)
- Up to 502-517 HP on 104 Octane (GT / GTX)
- Available for existing APR Stage III GT2871R Turbo Systems and the new APR Stage III GTX2867R Turbo Systems
- Software included for APR Stage III Customers (Vin must have APR Stage III software installed previously. Software not sold separately)
Five years prior to release, APR’s engineers began research and development on high flow cylinder heads. With the need to provide the most consistent and technologically advanced head porting solution, APR tested and quickly looked beyond manual head porting – each system is CNC machined to ensure strict repeatability. The goal was simple; a bolt on hardware solution with matching software, to integrate seamlessly into APR’s existing product line.
Calibration Report
Software is available for the previously available APR Stage III Turbocharger System and the new APR Stage III GTX Turbocharger System. Performance gains are as follows.
Stage III+ GT2871R Turbocharger System
- 407 HP & 348 FT-LBS – + 60 HP @ 7050 RPM & + 61 FT-LBS @ 3700 RPM over Stock Head – 91 (R+M)/2 or 95 RON
- 430 HP & 384 FT-LBS – + 70 HP @ 6000 RPM & + 74 FT-LBS @ 4200 RPM over Stock Head – 93 (R+M)/2 or 98 RON
- 483 HP & 434 FT-LBS – +102 HP @ 5700 RPM & + 96 FT-LBS @ 5550 RPM over Stock Head – 100 (R+M)/2 or 104 RON
- 502 HP & 459 FT-LBS – +126 HP @ 5650 RPM & +120 FT-LBS @ 5400 RPM over Stock Head – 104 (R+M)/2 or 108 RON


More Dyno Graphs
- Stock vs Stage III vs Stage III+ – 91 (R+M)/2 or 95 RON – Crank
- Stock vs Stage III vs Stage III+ – 91 (R+M)/2 or 95 RON – Wheel
- Stock vs Stage III vs Stage III+ – 93 (R+M)/2 or 98 RON – Crank
- Stock vs Stage III vs Stage III+ – 93 (R+M)/2 or 98 RON – Wheel
- Stock vs Stage III vs Stage III+ – 100 (R+M)/2 or 104 RON – Crank
- Stock vs Stage III vs Stage III+ – 100 (R+M)/2 or 104 RON – Wheel
- Stock vs Stage III vs Stage III+ – 104 (R+M)/2 or 108 RON – Crank
- Stock vs Stage III vs Stage III+ – 104 (R+M)/2 or 108 RON – Wheel
Stage III+ GTX2867R Turbocharger System
- 426 HP & 394 FT-LBS – + 49 HP @ 5250 RPM & + 50 FT-LBS @ 5050 RPM over Stock Head – 91 (R+M)/2 or 95 RON
- 450 HP & 432 FT-LBS – + 65 HP @ 5050 RPM & + 69 FT-LBS @ 4800 RPM over Stock Head – 93 (R+M)/2 or 98 RON
- 501 HP & 492 FT-LBS – +117 HP @ 5150 RPM & +120 FT-LBS @ 5050 RPM over Stock Head – 100 (R+M)/2 or 104 RON
- 517 HP & 495 FT-LBS – +123 HP @ 5250 RPM & +125 FT-LBS @ 5150 RPM over Stock Head – 104 (R+M)/2 or 108 RON


More Dyno Graphs
- Stock vs Stage III GTX vs Stage III+ GTX – 91 (R+M)/2 or 95 RON – Crank
- Stock vs Stage III GTX vs Stage III+ GTX – 91 (R+M)/2 or 95 RON – Wheel
- Stock vs Stage III GTX vs Stage III+ GTX – 93 (R+M)/2 or 98 RON – Crank
- Stock vs Stage III GTX vs Stage III+ GTX – 93 (R+M)/2 or 98 RON – Wheel
- Stock vs Stage III GTX vs Stage III+ GTX – 100 (R+M)/2 or 104 RON – Crank
- Stock vs Stage III GTX vs Stage III+ GTX – 100 (R+M)/2 or 104 RON – Wheel
- Stock vs Stage III GTX vs Stage III+ GTX – 104 (R+M)/2 or 108 RON – Crank
- Stock vs Stage III GTX vs Stage III+ GTX – 104 (R+M)/2 or 108 RON – Wheel
Finding the Bottlenecks
In simplest terms, an engine is an air pump. The more air an engine can flow, the more power it can achieve given an adequate supply of fuel and ignition. Through development, APR has been able to continually increase power on the 2.0T FSI by finding bottlenecks in the system and eliminating them one at a time.
The 2.0T FSI’s factory intake and exhaust are the first two items causing an airflow restriction and as such both of these items are upgraded to expand the capabilities of the engine. After this, the factory K03 turbocharger becomes a restriction and therefore an entry level K04 Turbocharger System is available. This turbocharger comes standard on several high-end Audi, VW and Seat vehicles and eventually becomes the largest restriction point in the system.
APR’s solution to the flow-limited factory turbocharger is the Stage III Turbocharger System. Stage III consists of an entirely new high flow exhaust manifold, small frame Garrett Honeywell Turbocharger and larger turbocharger inlet and outlet plumbing. This system is capable of exploiting the bottleneck in the system between the K04 and Stage III, which in this case is the factory cylinder head.
As the final stage of the air intake and the first stage of the exhaust, the cylinder head is the most critical piece of the air pump. The cylinder head is a restriction on both the intake and exhaust side at Stage III airflow levels. This results in a relatively high boost-to-airflow ratio and excessive backpressure on the exhaust side. By machining the cylinder head ports, the boost-to-airflow ratio decreases by as much as 10% and enough backpressure is alleviated to extend the spark knock threshold by roughly 7 degrees. Together these benefits and others translate into an additional 70-126 HP, depending on octane, over our standard Stage III Turbocharger System!

Testing
APR has tested countless cylinder head port profiles over the past five years to ensure they’ve arrived at the best possible configuration. It’s important to understand that an increase in flow at the inlet or exhaust port is often coupled with a decrease in air velocity. Porting the cylinder head is not a simple process of making each port larger. For this reason, porting the cylinder head on a vehicle with a K04 or smaller turbocharger will actually decrease the output of the engine. The turbocharger itself represents a larger restriction than the cylinder head, so porting accomplishes nothing other than decreasing the velocity of the air as it enters the cylinder. In turn, this increases the time between spark and combustion making a slower burning, less powerful engine flowing no more air than it did before.
Through testing on APR’s Superflow Flow Bench, they’ve also discovered many different sizes and shapes would show no benefit in flow but would result in decreased velocity. As such, some ports may retain parts of their original casting, unmachined. This is not a mistake, as increasing the port size slightly larger to ensure all surfaces are machined proves less than ideal. CNC porting allows for precise profiling unachievable through hand porting and makes compensations necessary to account for core shift. The ultimate goal and end result was developing shape, volume and profile for each port that results in the highest flow yet the least decrease in velocity over stock.
APR’s Engineering Teams took development a step further though testing of 1mm oversized valves on both the intake and exhaust. Despite offering a significant improvement in airflow on the flow bench, there were no performance advantages from the engine. As mentioned earlier, the bottlenecks are located one at a time and between a ported head and oversized valve ported head, the restriction once again becomes the turbocharger system. The advantages of oversized ports are not realized until well over the 500 HP mark, which extends beyond other limitations in the system.
APR Stage III+
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By purchasing an APR Stage III+ Cylinder Head, your existing APR Stage III Turbocharger System’s software will be upgraded to APR Stage III+ Software, free of charge.
You must own an APR Stage III or Stage III GTX Turbocharger System to qualify for the free software upgrade.
Ordering Process
The process is simple. We’ll ship APR your cylinder head. They’ll perform the work and ship it back.
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Upon arrival each head will be inspected. If the head passes inspection, it will be disassembled, receive a thorough cleaning in APR’s Ultrasonic bath to remove carbon buildup, and finally ported on their in house CNC head-porting machine. After the porting process has been successfully completed, the head will undergo one final ultrasonic cleaning before being reassembled. The valves will be lapped and a final leak down test will be conducted, on APR’s purpose built test fixture, to ensure proper installation.
Requirements:
APR Stage III+ Software requires an APR Stage III or Stage III GTX Turbocharger System. Depending on which system or modifications you own, these components may not be necessary.
Application Guide:
2.0T FSI & 2.0 TFSI – EA113 – Transverse – AXX, BWA & BPY
- Audi A3 (MK2) – 6MT & S-Tronic
- Audi TT (MK2) – 6MT & S-Tronic
- Volkswagen Eos – 6MT & DSG
- Volkswagen Golf/GTI (MK5) – 6MT & DSG
- Volkswagen Jetta/GLI (MK5) – 6MT & DSG
- Volkswagen Passat (B6) – 6MT & DSG
MS000044 – $1,999.99 – APR 2.0T Cylinder Head Porting Service + Labor (contact us directly for a quote) for head removal and reinstallation.
Tags: APR, audi tuning, CYLINDER HEAD, cylinder head porting, EA113, EA113 tuning, go apr, GTX, porting, vw tuning
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APR New Product Releases!
Written by dion on May 14, 2013 – 11:29 am -Achtuning is pleased to announce several new additions and changes to the existing 2.0T FSI APR product line! The APR Stage III Turbocharger Systems are now updated with the latest turbocharger technology. APR Stage III customers looking to go further, now can with the addition of APR’s performance cylinder head.
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