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------ Audi C4 / C5 S6/RS6 ECU Tuning Software by Unitronic ------

Looking for ECU Performance Upgrades for your C4/C5 Audi S6/RS6? You've stumbled into the right thread! This will be the "go-to" thread for all Unitronic Engine ECU products for the C4/C5 Audi S6/RS6, and if anyone has questions, please direct them here!

CLICK BELOW for a FULL software listing of YOUR car!

Audi S6 4.2L V8 2002-2003 ECU Tuning Software

Audi RS6 4.2L V8 2000-2001 ECU Tuning Software


Now for a little information about the product;

Audi S6


Audi S6 Unitronic Stage 1 Engine Software Specs:

-Optimized for 91 Octane
-Engineered with Strict Industry Standards
-Extensively Tested Under Various Driving Conditions
-Audi Factory Safety Limiters Retained
-Greatest Power and Torque Gains in the Industry, Guaranteed!
-Optimized Responsiveness and Drivability
-Optimized Smoothness and Driving Comfort
-Power Delivery Perfectly Optimized Throughout the Power Band
-Improved Fuel Efficiency
-Speed Governor Removed
-Lower End Hesitation (Lag) Removed

Audi S6 Unitronic Stage 1+ Engine Software Specs:

-Optimized for 93 Octane

Audi S6 Unitronic Stage 2 Engine Software Specs:

-Optimized for 93 Octane
-Upgraded Exhaust System Required

Audi RS6


Audi RS6 Unitronic Stage 1 Engine Software Specs:

-Optimized for 91 Octane

CLICK HERE for your Audi C4/C5 S6/RS6 ECU Tuning Software!

It's important to note that we also offer the industries LEADING Guarantee. All Unitronic performance software upgrades come with an unconditional 30-day money back guarantee, to ensure that your power and performance expectations are fully met. Our goal is to enhance your driving pleasure, and our risk free guarantee brings you peace of mind. If for any reason you are not 100% delighted with your Unitronic software, you may return it for a full refund (installation fees may not be covered).

At the end of the day, Unitronic Performance Products are engineered to deliver instantaneous asphalt-shredding performance while maximizing your daily driving comfort and pleasure. We guarantee to DELIVER THE POWER, resulting in a night and day difference that you will immediately feel and fall in love with; all done in direct accordance with the specifications established by the manufacturer, to ensure complete reliability.

If you have any questions or concerns, please do not hesitate to contact us via email ([email protected]), phone (1-866-341-2447), or PM here on the forum!


Team Unitronic
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