APR - T4100001

APR DTR8868 Direct Replacement Turbo Charger System (3.0T EA839)

Fits Audi S4 18-24, S5 18-24, S5 Sportback 18-24, SQ5 18-24, SQ5 Sportback 21-24

APR Stage 3 software was designed with reliability in mind. It's designed to not spike the turbo hard in the lower RPM band or run on the edge of what the factory rods and pistons have been known to handle. Particular attention was paid toward component protections, for exhaust gas temperature (EGT), back pressure safety (EMAP), turbocharger discharge temperatures, and fueling system capabilities. This was done through accurately adjusting the factory modeling during the development phase. As the need for more fuel increases through rising exhaust gas temperature, the system will lower lambda to cool EGT, but will not excessively tax the injection system with excessive on-times. Secondary protections will limit output for safety. By using our HPFP software headroom is increased significantly, but does so without overdriving the pressure to the injection system. The need for limiting power under extreme prolonged use (Tracking the vehicle for example), is greatly reduced. Lastly, with the upgraded HPFP, output on ethanol is dramatically increased whereas on the stock HPFP Ethanol makes similar power to pump fuel.

• New DTR8868 direct turbocharger replacement designed by APR
• Includes free ECU software upgrade from lower APR Stage
• Direct bolt-on upgrade to 3.0T EA839 engines
• Included software upgrade produces up to 620 HP (571 AWHP) and 622 FT-LBS (572 AWFT-LBS) of Torque
• Up to +263 AWHP and +255 AW-FTLBS of torque over stock
• Turbocharger provides headroom beyond advertised numbers
• Included software upgrade remains emissions compliant
• Included software upgrade designed for use on a factory engine
• Supports 91, 93, 100, 104 AKI, and E60-E85 in North America
• Support 95, 98, 104, 108 RON, and E60-E85 in the ROW
• German dual ceramic ball bearing center section
• Vibration sort rig (VSR) balanced turbocharger center housing rotating assembly (CHRA)
• Aircraft-grade billet 6061 aluminum 88/64mm compressor wheel
• .65 A/R compressor cover
• Integrated diverter valve (DV) port for use with OEM DV (Not included)
• Nickle-based superalloy K418 high-flow 68/63mm turbine wheel
• High temperature 310 stainless steel turbine housing
• Internally gated wastegate with actuator
• .83 A/R turbine cover
• All necessary hardware, gaskets, and clamps included
• Connects to your factory components
• Optional HPFP upgrade provides increased output on ethanol, and more protection headroom
• Incredible value with support and directions included