Home / Shop / APR DTR8868 Turbocharger Systems T4100001 Systems, 0.65 A/R Billet Aluminum Compressor, 0.83 A/R Stainless Steel Turbine, Internal WG Actuator, ECU Upgrade, Hardware, Audi, Kit

APR DTR8868 Turbocharger Systems T4100001 Systems, 0.65 A/R Billet Aluminum Compressor, 0.83 A/R Stainless Steel Turbine, Internal WG Actuator, ECU Upgrade, Hardware, Audi, Kit

SKU: AXRT4100001

Turbocharger Kits

Apr

APR DTR8868 Turbocharger Systems T4100001 Systems, 0.65 A/R Billet Aluminum Compressor, 0.83 A/R Stainless Steel Turbine, Internal WG Actuator, ECU Upgrade, Hardware, Audi, Kit

SKU: AXRT4100001

Turbocharger Kits

BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.

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Description

Data: v2 - Desc: v4.2 - Upd: 2026-11-07 16:11:51

Data: v4.2 - Upd: 2026-11-08 00:37:46

Features

Vehicle Compatibility and Return Conditions.

This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.

Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.

Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.

(keyword: ecu)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s	Apr, Apr (holley)
StreetFX SKU	axrT4100001
SFX Item ID	5034079
Accounting SKU	axr-T4100001
Manufacturer SKU	T4100001
Manufacturer UPC	810009935254
Alternative References	APRT4100001, AXR-T4100001, T4100001

Turbocharger Systems, 0.65 A/R Billet Aluminum Compressor, 0.83 A/R Stainless Steel Turbine, Internal WG Actuator, ECU Upgrade, Hardware, Audi, Kit

APR DTR8868 turbocharger systems are direct replacements for the EA839 3.0L turbo engine. These upgrades include matching software for various vehicles and mods, providing up to 620 hp (571 AWHP) and 422 lbs.-ft. of torque (572 AWT), depending on vehicle platform and fueling, all while keeping emissions components unmodified. The software supports premium pump fuel grades, race fuel grades, and even ethanol on the S4, S5, and SQ5 platforms with fueling upgrades. For dedicated race cars, the turbocharger is designed with plenty of headroom to go even further on your own.

The APR Stage 3 software is designed to avoid hard-spiking in the lower RPM band or running on the edge of what the factory rods and pistons should handle. Particular attention was paid toward component protections for exhaust gas temperature (EGT), back pressure safety (EMAP), turbocharger discharge temperatures, and fueling system capabilities. As rising exhaust gas temperatures require more fuel, the system will lower lambda to cool EGT without taxing the injection system with excessive on-times. Secondary protections will limit output for safety. The HPFP software helps increase headroom without over-driving the pressure to the injection system. The need for limiting power under extreme prolonged use (like tracking the vehicle), is greatly reduced, and the optional upgraded HPFP dramatically increases ethanol output.

Note: Specific software is required to use this system, and an upgrade from lower stage systems is included for various vehicles. Software compatibility must be checked before purchase as the software installs to your vehicle's factory ECU. Currently, software can only be installed by an authorized APR dealer. Software is available in two formats: for use with the stock HPFP or for use with the APR HPFP.

Additional APR DTR8868 turbocharger systems features, items, and specifications include:
• Does not require a core and no additional downtime
• Designed to bolt to factory location with factory-style connections
• German dual ceramic ball bearing center section eliminates failure-prone journal bearing design
• Smooth and reliable operation with a better transient response
• Upgraded compressor cover with matching A/R
• Larger aircraft-grade, 6061 billet aluminum 88mm compressor wheel
• Turbine housing cast with high-temperature 310 stainless steel
• Turbine A/R matched to nickel-based super-alloy K418 high-flow 54mm turbine wheel
• Each rotating group is VSR (vibration sort rig) balanced for reliable operation
• Includes complete turbocharger with a calibrated wastegate actuator and diverter valve
• All necessary single-install hardware, gaskets, and clamps
• Intake system adapter provides maximum flow-through as optional upgrade for factory intake
• ECU software upgrade designed for factory engine and remains emissions-compliant
• Supports 91, 93, 100, and 104 AKII, and E60-E85 in North America
• Supports 95, 98, 104, 108 RON, and E60-E85 everywhere else
• Integrated DV (Diverter Valve) port with OEM DV included

Product Attributes
Brand	APR
Manufacturer's Part Number	T4100001
Part Type	Turbocharger Kits
Product Line	APR DTR8868 Turbocharger Systems
UPC	810009935254
Turbocharger Style	DTR8868
Compressor Housing Material	Aluminum
Compressor Housing Color	Natural
Turbine Housing Material	Stainless steel
Turbine Housing Finish	Natural
Compressor Wheel Construction	Billet aluminum
Turbocharger Bearing Style	Ceramic ball bearing
Turbocharger Quantity	Single
Exhaust Manifold Included	No
Intercooler Included	No
Wastegate Actuator Included	Yes
Wastegate Location	Internal
Turbocharger Downpipe Included	No
Filter Included	No
Fuel Injectors Included	No
Computer Chip/Programmer Included	Yes
Gaskets Included	Yes
Hardware Included	Yes
Remanufactured	No
Quantity	Sold as a kit.
Notes	Kit includes an upgrade to the APR Stage 3 ECU at no additional charge if the vehicle is already tuned with an APR ECU upgrade. If the vehicle is not, an APR Stage 1 ECU upgrade must be purchased to make use of the free upgrade.