For many, the standard Porsche 911 Turbo’s 480HP 3.6-liter bi-turbocharged flat six is fast enough, but there’s always room for improvement, according to Porsche tuning specialist Sportec. The Swiss based tuner revealed a new version of its 911 Turbo based SPR1 that lifts the 3.6-liter flat six’s output to a staggering 858 horsepower at 8,200 rpm and 642 lb.-ft. of peak torque at 4,800 rpm. Power is transferred to all four wheels through a six-speed manual gearbox. According to Sportec, the SPR1 takes a mere 3.0 seconds to hit 62mph with 186mph coming in just 18.9 seconds. The Swiss firm said that the supercar has recorded a top speed in excess of 236mph or at Nardo, Italy.
