North American Volkswagen performance house Stasis Engineering debuted its 
Signature series of Audi enhancement packages in the UK with the 
Signature Series S4.
Stasis's engineers have developed 
the 2010 onwards Audi S4's supercharged V6, 3.0-liter TFSI engine, increasing 
performance from a measured standard 333 hp / 344 lb-ft of torque to 410 hp / 370 lb-ft.
The 
Stasis Signature S4 is available in two versions, Touring and Challenge.
The Touring Edition combines 
the significant power and torque increase with aggressive suspension and bespoke 
wheels to Audi's signature sports saloon to deliver additional poise and grace.
The Challenge Edition refines the Touring package with additional racing 
technology for the road. Everything Stasis's engineers have learned at the 
racetrack has been distilled into an S4 upgrade package that's also been 
specified to be civilized for town driving.
Stasis Signature S4 Components
Signature S4 Touring Edition
	- Exhaust: Quad outlet with tunable low RPM 
resonators
- Engine: Engine Tuning Software - performance increases to 410 hp / 370 lb-ft
- Suspension: 1 inch lower, Increased spring rate, anti-roll 
bar kit and matched bushings & bump stops
- Brakes: Optional 
high-performance street pads and braided stainless steel lines
- Wheels: 20 
inch x 8.5 inch lightweight cast aluminum wheels, Optional 19 inch x 9 inch 
lightweight cast aluminum wheels
- Tires: high performance
Signature 
S4 Challenge Edition
	- Exhaust: Quad outlet with tunable high RPM 
resonators (recommended for manual transmission)
- Engine: Engine Tuning 
Software - performance increases to 410 hp / 370 lb-ft
- Suspension: Ohlins 
SL dampers, increased spring rate and high performance anti-roll bar kit
- Brakes: 6-piston Alcon monobloc calipers, 370 mm 2-piece discs (390-mm 
optional), stainless steel brake lines & high-performance pads
- Differential: high-bias center differential (manual transmission only)
- Wheels: 20 inch 
x 9.5 inch ultra-lightweight forged aluminum wheels
- Tires: extreme 
performance
The Stasis Signature S4 packages are available in the United Kingdom with prices starting at 12,500 
GBP ($20,000) including tax and installation.