Stasis Signature Series Audi S4 and S5 Cabriolet to Debut at SEMA

In stock from, the supercharged 3.0-liter V-6 used in both the Audi S4 sedan and the S5 Cabriolet is plenty potent, but that didn't seem to deter the folks at Stasis engineering from pushing the envelope further. The West Virginia-based Audi tuner will launch its Signature Series S4 and S5 Cabriolets at the 2010 SEMA show this week -- both of which incorporate some major horsepower underhood.

Normally, that supercharged six-cylinder cranks out a solid 333 horsepower and 325 pound-feet of torque. Stasis, however, bolts on a reflashed engine controller, along with a less restrictive stainless steel exhaust. The result? The so-called 3.0T now produces an impressive 410 horsepower and 370 pound-feet of torque.

Impressive, but that power is worthless without some measure of control. Stasis apparently agrees, as both Signature Series S-cars receive a number of suspension revisions. Stock springs and dampers are replaced with stiffer units, while lightweight double-digressive valve dampers reportedly help curtail body motions while delivering a compliant ride. If that wasn't enough, Stasis also bolts on larger front and rear anti-roll bars to further aid performance in the twisties.

Signature Series S4 and S5 Cabs also receive some improved hardware in the braking department. The stock rotors are scrapped in favor of lightweight two-piece 14.5-inch rotors, although larger 15.3-inch rotors. Also included in the package are six-piston calipers fitted at each corner. According to Stasis, this helps reduce stopping distances while simultaneously shaving 52 pounds from the car. Buyers will have a choice from a number of custom wheel choices, including 20-inch cast aluminum units or 20-inch forged aluminum designs. Regardless of the choice, the new rims are fitted with high-performance Yokohama tires.

We haven't seen finalized specifications for the modified S5 Cabriolet, but Stasis says a Signature Series S4 will sprint from 0-60 mph in 4.5 seconds (0.6 seconds better than a stock S4), and pull in excess of 1.0 g on a skid pad. Although both cars will officially make their world debut later this week, Stasis is currently accepting orders for the conversion.

Source: Stasis

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