APR CD100025 Downpipe and High Flow Cat for Audi B8 A4 2.0T

APR's 3 inch downpipe with high flow catalyst for the A4 2.0 TFSI is the first true downpipe for the A4 and the only one that incorporates traditional exhaust performance tuning for the new 2.0 TFSI engine. Other 2.0 TFSI engine applications outside of the A4 chassis have historically enjoyed the following benefits that have never before been made available to A4 owners

• 3 inch Exhaust Tubing Diameter beginning at the Turbocharger Exit for Maximum Turbocharger Spool and Peak Horsepower
• Relocation of the Catalyst to Reduce Backpressure and Turbulent Airflow at the Turbocharger
• Incorporation of a 200 Cell Count Catalyst to aid in Turbocharger Spool and Remove Restriction
• Considerable Increases in Peak Horsepower, Peak Torque and Fuel Economy

APR is proud to offer the only true 3 inch full length downpipe available for the 2.0 TFSI A4 which delivers true exhaust Performance Without Compromise. The APR Downpipe exhaust system can see huge gains in power and torque over APR Stage I software system when combined with APR Stage II software. APR Stage II software is available at APR Dealers around the country as a free update to existing APR software customers. When combined with APR's upcoming full exhaust system, the APR Stage II software showed huge gains over stage I software (As listed below), mostly from the recalibration and introduction of the APR High Flow Downpipe System. Customers purchasing the downpipe only will see similar gains with APR stage II software.

APR Stage II Power gains over APR Stage I.
Stock – 212 HP & 260 TQ

• Stage 1 91 Octane – 229 HP & 323 TQ
• Stage 2 91 Octane – 239 HP & 353 TQ

• Stage 1 93 Octane – 234 HP & 333 TQ
• Stage 2 93 Octane – 242 HP & 362 TQ

• Stage 1 100 Octane – 268 HP & 338 TQ
• Stage 2 100 Octane – 270 HP & 380 TQ

The most impressive aspect of APR’s Stage 1 and 2 ECU Upgrades are the gains made over stock at different RPM’s:

• Stage 1 91 Octane – 35 HP @ 5500 RPM & 64 TQ @ 2250 RPM
• Stage 2 91 Octane – 43 HP @ 2650 RPM & 86 TQ @ 2650 RPM

• Stage 1 93 Octane – 40 HP @ 5500 RPM & 74 TQ @ 2250 RPM
• Stage 2 93 Octane – 46 HP @ 2550 RPM & 95 TQ @ 2550 RPM

• Stage 1 100 Octane – 62 HP @ 5500 RPM & 78 TQ @ 2500 RPM
• Stage 2 100 Octane – 64 HP @ 5550 RPM & 114 TQ @ 2650 RPM