On the greddy ad it says that it doesnt lower low-end torque (im assuming low rpm is what it means).. how does it do that and be able to support 800 horsepower (every 800+ hp supra ive seen has a greddy)and still not lose low end torque on small engines like b18s. like.. i have big piping, and the greddy must also if it can support 800 hp, so how does greddy not lose torque at low rpm with the same size piping but mine does?