Dyno tuned perfection which add 25-30 rear wheel HP & 30-40 Additional FT/LBS or Torque (60rpm sooner in the RPM band). Constructed of T304 Stainless Steel these will go the distance. This kit adds the Diablo Sport I-1000 - which further tunes the vehicles PCM to get more power and eliminate and pesky check engine lights (329.95 value). The Predator also adjusts tire and gear size and gives the end user countless options for tuning. Including a 91Octane high Performance tune and a fuel economy 87 octane tune. Additionally this item will plug and play for our supercharger system, should you decide to add more power. Those of you towing will be glad to know that cooling fans can be adjusted to turn on sooner when towing or all the time. Plugs into the OBD2 port end user friendly. Additionally, this kit adds the Hush Power resonator. After many attempts and fitting dozens of resonators the Hush power by far is the best combination out there. The 409S HP-2 mufflers have a case length of 18-inches and a 4.00 X 5.50-inch width. Due to their Cool Shell Technology they can be placed in virtually any location under the vehicle. The 409S HP-2 mufflers feature a painted 409S outer shell, and 409S internal construction. 2.50-inch inlet/outlet diameters, there is a model available to suit your needs. The HP-2 line offers a wide variety of applications from rock crawling to award winning customs.