All 4.0T V8 (EA824 / EA825) tunes
The 4.0 TFSI has room for significant additional performance beyond what it comes with from the factory. Our Stage 1 tune unlocks this performance, and delivers a huge increase in power and torque across the rev range, with sharper throttle response, stronger acceleration, and a more consistent delivery of power from low RPM through the upper end of the rev range. Despite the substantial increase in output, power delivery remains smooth and progressive for a refined and usable driving experience.
The Stage 1 tune is designed to work with the factory turbochargers and supporting hardware, so no major hardware upgrades are required. 93 octane / 98 RON fuel and colder spark plugs are required to support the increased power output. The result is a substantial improvement in overall performance while retaining the smooth, consistent characteristics expected from a well-developed tune.
Given the significant increase in performance over stock, it is crucial to ensure the vehicle is mechanically healthy and properly maintained before installing the tune.
Upgrade
Requirement
Minimum 93 Oct / 98 RON Fuel
Required
Colder spark plugs (NGK Racing R7437-9)
If Stage 1 isn't enough for you, TuneZilla's Stage 2 tune takes the 4.0 TFSI to another level. Built for vehicles equipped with a more complete set of supporting hardware, this tune delivers a huge jump in power and torque over stock, transforming the character of the engine with harder acceleration, stronger response, and a much more aggressive powerband. Power builds quickly and carries strongly through the rev range, giving the engine a level of performance that is a significant step beyond Stage 1.
Upgraded downpipes are required to support the increased airflow, along with 93 octane / 98 RON fuel and colder spark plugs. An upgraded intercooler and intake are recommended to further support the increased output.
This is a substantial increase in performance, so it is crucial that the vehicle is mechanically healthy and properly maintained before installation.
Upgraded Downpipes (high-flow cat or catless)
Upgraded Intercooler
Recommended
Upgraded Intake
The Stage Plus TCU tune for the ZF8HP is designed as a complimentary upgrade that can be paired with our Stage 1 ECU tune. It includes increased torque limits to accommodate the additional output from our ECU tune, along with revised transmission behaviour for improved responsiveness and drivability.
Customers looking for more comprehensive transmission tuning or additional TCU adjustments should select our full Stage 1 TCU tune instead of Stage Plus.
If the Stage Plus option is not available for your vehicle in InstaTune, you can request it through the TuneZilla Portal by following the prompts. Certain transmission box codes may not be immediately available.
Unlock the full potential of your vehicle’s performance with our TCU tune designed specifically for the ZF8HP transmission.
Our TCU tune is designed to enhance the overall driving experience by refining the factory transmission programming and delivering quicker, more responsive shifts. With revised shift points, reduced kickdown delays, increased torque limits, and shorter gear change times, the transmission responds more naturally to driver input while making better use of the engine's available power.
Whether cruising comfortably in Drive or pushing harder in Sport mode, the updated shift behaviour provides a more engaging and consistent feel across a range of driving conditions. We've focused on creating a well-rounded upgrade that improves both everyday drivability and performance without sacrificing the smooth operation that makes the ZF8HP such a capable transmission.
The result is a sharper, more responsive transmission that feels better suited to the vehicle's performance, whether you're putting together a refined daily driver, building a street sleeper, or getting the most out of a more extensively modified setup.
Increased Torque Limits
Recalibrated Shifting Points In Drive And Sport Modes
Reduced Delay In Kickdown Response During Acceleration
Shortened Gear Switch Duration
Removed The Stock Manual Button Bug