Engineered for enthusiasts seeking a complete Audi S4 or Audi S5 B9 3.0T EA839 performance upgrade, the RED Package Bundle delivers increased horsepower, significantly stronger mid-range torque, faster turbo response, and consistent power under sustained boost — all within the limits of the factory turbocharger system.
The result is a substantial increase in torque density, improved turbo response, broader powerband efficiency, and repeatable performance under sustained load, all while maintaining daily drivability and smooth OEM-like operation.
Engineered for enthusiasts seeking a complete Audi S4 or Audi S5 B9 3.0T performance upgrade, the RED Package Bundle delivers increased horsepower, significantly stronger mid-range torque, faster turbo response, and consistent power under sustained boost — all within the limits of the factory turbocharger system.
The factory airbox is engineered for noise suppression and emissions compliance, not maximum flow. Upgrading the intake system improves the turbocharger’s ability to draw in air efficiently, reducing pressure drop before the compressor and enhancing throttle response.
AWE Carbon Fiber AirGate Intake
A premium carbon fiber intake system designed to balance airflow performance with thermal shielding. The AirGate design allows users to configure the intake as a sealed system for temperature control or partially open for enhanced induction acoustics. The carbon fiber housing resists heat absorption and maintains structural rigidity under load.
Untd. Performance Cold Air Intake
A high-flow, open-element intake system designed for maximum volumetric efficiency. Engineered inlet geometry and filter placement promote unrestricted airflow while maintaining stable intake air temperatures during real-world driving conditions.
+8–17 HP (supporting modification when tuned)
+8–16 lb-ft torque
Faster turbo spool
Sharper throttle response
Enhanced induction sound characteristics
While intake upgrades alone provide modest gains, their primary value lies in supporting higher boost levels required for Stage 2 calibrations.
The factory downpipe contains restrictive catalytic material that limits exhaust gas flow immediately after the turbocharger. Upgrading the downpipe significantly reduces exhaust backpressure, allowing the turbo to operate more efficiently and achieve target boost levels sooner.
Untd. Performance Catless
Untd. Performance Catless with Integrated Heat Shield
Untd. Performance 200-Cell High-Flow Catalytic Converter
Untd. Performance 200-Cell High-Flow Catalytic Converter with Integrated Heat Shield
Catless Downpipe
Provides maximum exhaust flow and the most aggressive performance gains. Designed for off-road use where regulations permit. Delivers the fastest turbo response and strongest top-end power potential.
200-Cell High-Flow Catalytic Downpipe
Balances performance and emissions considerations. The 200-cell catalyst dramatically reduces restriction compared to OEM while maintaining a more refined exhaust tone and improved compliance characteristics.
Heat Shield Variants
Integrated shielding improves thermal management within the engine bay, reducing radiant heat transfer to surrounding components. Power output remains identical to non-shielded versions.
Compared to Stage 1 configuration:
+20–45 HP increase
+25–35 lb-ft additional torque
Noticeably stronger mid-range pull
Higher sustained top-end power
The downpipe upgrade is the defining hardware requirement for Stage 2 performance levels.
As boost pressure increases, so does charge-air temperature. The factory intercooler core can become heat-soaked during repeated acceleration runs, resulting in timing reduction and power loss. Upgrading the intercooler ensures consistent intake air temperatures, preserving ignition advance and boost efficiency.
Untd. Performance Intercooler with Charge Pipes
A high-capacity bar-and-plate core combined with upgraded charge pipes to minimize turbulence and pressure drop. Designed for high-boost applications and aggressive driving conditions.
IE Performance FDS Intercooler
Utilizes advanced core engineering to optimize airflow distribution across the cooling surface. Focuses on reducing pressure drop while maximizing thermal transfer efficiency.
Maintains rated horsepower during repeated pulls
Reduces heat soak
Stabilizes boost pressure
Supports full Stage 2 torque output
Intercooler upgrades do not independently increase peak horsepower but are critical for maintaining performance consistency, especially in warm climates or performance-oriented driving.
The ECU calibration is the central component that unlocks the performance potential of upgraded hardware. All available tuning platforms are engineered specifically for the EA839 engine architecture.
(Compatible with Stock Downpipe)
Available Options:
IE Performance Stage 1
Jackal Motorsport Stage 1
TuneZilla Stage 1
COBB Accessport Stage 1
400–420 HP
480–510 lb-ft torque
+50–70 HP
+110–130 lb-ft torque
Stage 1 significantly increases low- and mid-range torque, delivering immediate throttle response and improved acceleration while retaining factory exhaust hardware.
(Requires High-Flow or Catless Downpipe)
Available Options:
IE Performance Stage 2
Jackal Motorsport Stage 2
TuneZilla Stage 2
441–459 HP
522–543 lb-ft torque
+93–106 HP over stock
+152–175 lb-ft over stock
Provides a strong balance between performance and daily usability.
456–478 HP
543–571 lb-ft torque
+111–124 HP over stock
+162–186 lb-ft over stock
Delivers maximum airflow efficiency and the most aggressive acceleration characteristics within the factory turbocharger’s limits.
With the RED Package Bundle configuration:
Turbo spool occurs earlier in the rev range
Mid-range torque becomes substantially stronger
Throttle mapping feels more immediate and precise
Highway passing power is significantly improved
Power delivery remains smooth and predictable
The EA839 platform responds exceptionally well to airflow and calibration improvements, making this one of the most rewarding modern Audi engines to upgrade in stock turbo configuration.
The RED Package Bundle is ideal for:
Performance-focused daily drivers
Enthusiasts seeking reliable 450+ HP capability
Owners preparing for future turbocharger upgrades
Drivers demanding consistent power under real-world conditions
Power figures vary based on fuel quality, elevation, climate, and drivetrain loss.
Catless downpipes may not be emissions compliant for street use in certain regions.
Professional installation is recommended.
