Beginning with the engine, Techart's power kit boosts the output of the Cayenne's 3.0-litre diesel from 240HP to 290HP while peak torque rises from 550Nm to 630Nm (465 lb-ft) at 2,200 rpm, with more than 500Nm being available from around 1,100 rpm to beyond 4,000 rpm.
The tuner claims that while 0 to 60mph sprint time drops from 8.3 seconds to 7.7 seconds, CO2 emissions and fuel consumption on the combined cycle remain unchanged at 244g/km and 30.4mpg UK (9.3lt/100 km or 25.3mpg US) respectively.
For cars fitted with air suspension, Techart offers a new suspension control module that lowers the vehicle, reducing roll and further improving aerodynamics. The Cayenne Diesel rides on new 21-inch alloy wheels fitted with Michelin Diamaris 4X4 XL 295/35 R21 tires.
Complementing the chassis and engine upgrades, is a full aero kit with a front panel with a deeper front spoiler, side skirts and a new rear apron with an integrated diffuser.
The package also comprises of headlight and tail lamp trims, twin double oval exhaust pipes, a three-spoke TECHART sports steering wheel with a Porsche airbag, and interior trim upgrades that include light-weight aluminum pedals and footrest and leather edged luxury logo floor mats.
Buyers can also opt for 22-inch body color wheels shod in 295/30 R22 Continental tyres, an Aero or Turbo-look bonnet, plus numerous interior options ranging from individual trim components to customized leather upholstery.
In the UK, the Cayenne Diesel with Techart's Aerokit 1 package that includes the exterior and interior upgrades is priced as new from £53,000 ($85,500 or €61,500) while adding the engine updates rises the price to £55,500 ($88,700 or €63,900.
For customers that already own a Cayenne Diesel, the Aerokit 1 can be fitted from £15,000 ($24,200 or €17,500) and the 290HP engine kit from £2,500 ($4,000 €2,900).