Audi RS4/RS5 B9 Stage 1 ECU Tune – 2.9TT EA839 V6 Turbo S "name":"How much does the Rear

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Polished stainless steel or black finish

downpipes are a mandatory prerequisite

Direct bolt-on replacement for the factory chargepipe with zero fitment compromise

Compatibility: GM LS Gen 3 and Gen 4 engines

Audi RS4/RS5 B9 Stage 1 ECU Tune – 2.9TT EA839 V6 Turbo S "name":"How much does the RearSPEC STOCK YPG TUNED GAIN Power 450 HP 520 HP +70 HP Torque 600 Nm 690 Nm +90 Nm 2. 9T Elevate your Audi RS4 or RS5 B9 with YPG Motorsport's Stage 1 ECU Tune for the 2. 9 liter twin turbo V6 TFSI engine. This calibration unlocks substantial power gains through optimized boost targets, ignition timing, and fueling strategies all on stock hardware with zero additional modifications required. Performance Gains Up to +70 HP over stock Up to +90 Nm