Get-Ad Free Access: Join Today!

2005 PSI CS400

CS400 is PSI’s first tuning project for the 997 Porsche and the car that will introduce the company to the North America. To produce 400 horsepower, PSI take a standard Carrera, add their own intake, exhaust and control unit. These components benefit from PSI’s motor sports program and provide a foundation for the company as both a tuner and a race team.
Since 1998, PSI have been working with Porsches, contesting them in the French and Belgian GT championships. By 2001, the Belgium-based company started offering tuning programs for the 996 range. Those developments reached a climax with the PSI Porsche GT2-R having 720 bhp @ 5500 rpm.
For 2005, PSI offer an Engine Kit for the 997, which consists of an air box, sports air filter, intake manifold, headers, catalytic converters, rear mufflers and a reprogrammed engine control unit. The newly developed body kit features bumpers, a front splitter, rear diffuser, and a giant wing made in carbon fiber.
Hopefully the CS400 is the first of several exciting Porsches to come from PSI. The North American site for PSI is currently being developed, however, their European site makes for an entertaining browse:

Story by Richard Owen for


In Detail

submitted by Richard Owen
engine Boxer-6 w/CS400 Engine Kit
valvetrain DOHC, 4 Valves per Cyl w/Variable Valve Timing
fuel feed Fuel Injection
displacement 3824 cc / 233.4 in³
bore 99.06 mm / 3.90 in
stroke 82.8 mm / 3.26 in
power 298.3 kw / 400 bhp @ 7000 rpm
specific output 104.6 bhp per litre
bhp/weight 281.69 bhp per tonne
torque 430 nm / 317.2 ft lbs @ 5500 rpm
body / frame Unit Steel
driven wheels RWD
front tires 235/35 ZR 19
rear tires 295/30 ZR 19
front brakes Cross Drilled & Inner Vented Rotors w/4-Piston, Aluminum Monobloc Calipers
f brake size x 330 mm / x 13.0 in
rear brakes Cross Drilled & Inner Vented Rotors w/4-Piston, Aluminum Monobloc Calipers
r brake size x 330 mm / x 13.0 in
front wheels F 48.3 x 20.3 cm / 19 x 8 in
rear wheels R 48.3 x 27.9 cm / 19 x 11.0 in
f suspension MacPherson Struts w/Lower Control Arms, Coil Springs, Stabilizer Bar, Shock Absorbers w/Active Control
r suspension 5-Link Multilink w/Coil Springs, Shock Absorbers w/Active Control
wheelbase 2350 mm / 92.5 in
front track 1484 mm / 58.4 in
rear track 1516 mm / 59.7 in
length 4461 mm / 175.6 in
width 1808 mm / 71.2 in
height 1300 mm / 51.2 in
transmission 6-Speed Manual
gear ratios 3.91:1, 2.32:1, 1.61:1, 1.28:1, 1.08:1, 0.88:1, :1
final drive 3.44:1