Tuners: 2008 D3 Cadillac XLR-V - MotorTrend Magazine

D3's focus has been on amping-up Cadillac's already formidable V-series offerings, with its take on Cadillac's XLR-V roadster recently getting a chance to prove its mettle through our battery of performance testing. On paper, the D3 XLR-V is one killer Caddy. We sampled D3's Stage 2 Package, which consists of an upgraded supercharger, monster dual intake, Corsa full exhaust system, upgraded intercooler, performance spark plugs, auxiliary methanol injection cooling system, and retuned suspension... Rubber also is upgraded, with Toyo Proxes T1Rs sized 245/35ZR20 up front and 285/30ZR20 in the rear replacing the stock 19-in. Pirelli runflats. All those add-ons are generating eye-popping output numbers -- 575 hp at 5900 rpm and 585 lb-ft of torque at 4000 rpm -- while providing stellar aural stimulation. Sixty mph comes and goes in just 4. 2 sec, the quarter in 12. 7 sec at 112 mph -- a virtual dead heat with the Mercedes-Benz SL63 AMG. Unlike the sound effects, however, the performance boost over a stock XLR-V isn't as stimulating. Despite trumping the stock car by 132 hp and 171 lb-ft, the D3 XLR-V is just 0. 4 sec quicker to 60 mph, 0. 9 sec quicker to 100 mph, and 0. 4 sec faster through the quarter. Source: www.motortrend.com