STILLEN'S exhaust for the G35 Coupe is the result of months of development and testing on the G35 and 350Z.
STILLEN's Cat-Back Exhaust System helps drum up substantial horsepower and torque, giving your G the extra edge of performance. This Exhaust System is a true Cat-Back System, and is crafted of Mandrel-bent Stainless Steel for a long service life. At idle the STILLEN Exhaust is unobtrusive, however when pressed, STILLEN's recognizable, trademark sound emanates. This is a pleasing tone, authoritative and yet responsible. Not only does this exhaust system have a sharp, show ready look, but it also offers impressive horsepower and torque gains as well as a lifetime warranty and is easy to install.
STILLEN's Cat-Back Exhaust is built for power. Power that you can feel across the power band with a big gain on top. Mileage gains during highway travel can be expected as you cruise at steady speeds. The free flowing performance mufflers and tips are made out of polished stainless steel for long life. The STILLEN fit and finish is second to none. The improved airflow created by the addition of the exhaust is verified by the significant dyno HP increase. All STILLEN stainless steel exhausts feature a limited lifetime warranty.
This was installed on my '06 G35 when I bought it used nearly two years ago. The system is really awesome. As far as HP and torque gains I cannot speak for it because I do not have a base comparison. However, the sound it makes is intoxicating. I do not get tired of the sound ever, at cruising speeds it is very mild and does not drone, even when at higher cruising speeds and the engine is winding above 3K. Accelerating and on throttle sound is great and I get compliments all the time, no complaints either. The whole system is holding up to corrosion very well, and I live in an area where the roads get heavily salted in the winter. Can't wait to save up some extra cash and get the Stillen cats too just to open it up more.