A client came to us with his 2008 Infiniti G37S.  He talked with Jason Oefelein to see the direction he wanted to go with his car.  The client wanted to have an increase in power, while maintaining the reliability.  A Stillen supercharger was chosen for this project, along with Stillen headers and an HKS exhaust.  The car also recieved some Tein performance springs to replace the stock ones. 

We dynoed the car in its stock form and it put down 287 whp and 242 ft-lbs of torque. 

A Stillen supercharger kit, Stillen headers, HKS Exhaust, and Zeitronix wideband monitor were installed. 

The HKS Dual exhaust looks good. 

The Stillen supercharger fits in nicely. 

The Zeitronix monitor was stealthily installed where the ash tray and cigarette lighter once were.  The Zeitronix monitors the air/fuel ratio, EGT and air intake temp. 

And of course, we put the car on the dyno to see the improvements. 

2008 Supercharged Infiniti G37S from Portland Speed Industries on Vimeo.

Here is a before and after comparison. 

The horsepower went up by over 120 and the torque increased by 70 ft-lbs.  Not bad gains from with this new setup.

Tags: 2008, G37S, HKS, Infiniti, Stillen, supercharged, Zeitronix