Akropovik Titanium Cat-back with Carbon Fiber tips
Not only does that increase the power output, but it also significantly reduces the weight. The attention to detail can be seen in every component. Even the exhaust tail pipes were designed to resemble the trademark GT-R tail lights.
Substantial work was required to achieve the 8 horsepower output and 12 Nm/9 lbs-ft of torque increase over stock. These gains were not only realized at redline but throughout the entire rpm range of the engine.
Additionally, we were able to reduce the weight by 8 kg/19 lbs. when compared with the stock system. The GT-R system was designed to have a sporty sound. Droning, which can ruin the entire driving experience, was carefully tuned out.
Stillen Secondary Cat Delete Y-Pipe
The factory equipment this replaces contains two flow-robbing cats and weighs in at a hefty 30.25 lbs! Our new Y-pipe replaces those cats with polished 304 stainless steel resonators and drops an astounding 47% of that weight, coming in right at 16 lbs.
There is a lot of power held back by the factory exhaust system on the Nissan GT-R. By eliminating the factory catalytic converters, STILLEN has successfully improved flow, creating power gains as well as dramatically improving sound.
Catalytic converters are not only very restrictive to the exhaust flow and performance, but they also act as mufflers, greatly reducing the sound that enthusiasts desire.
This Secondary Cat-Delete Y-Pipe System is TIG welded and constructed out of polished 304 stainless steel with laser-cut and CNC machined 304 stainless steel flanges. The resonators themselves are also TIG welded, polished 304 stainless steel.
To allow the exhaust system to flex with the movement of the engine, yet stand up to the heat and flames coming off of the turbos, we have used nothing but the best turbo specific flex joints on this application. Under hard driving, flames will travel through the exhaust system, and only turbo specific flex joints will stand up to the heat generated in those circumstances.