11 more rear wheel horsepower and 5 more rear wheel torque without tuning !! Expect 25+ rear wheel horsepower and 20 rear wheel torque with custom tuning !! The silicone components are high temp 4 ply construction , and the tubes are t304 stainless steel bends that are powdercoated black chrome to give it a nice unique look and is also scratch resistant so that they look good for a long time (unlike polished aluminum) , and all the clamps are t304 stainless liner clamps so that the silicone doesn't poke through the slots in the clamp . This kit also uses a large 9 inch k&n high flow air filter for maximum airflow .