HKS Super Turbo Exhaust - WRX STI GVB/GVF Intake Manifold An added benefit of the

An added benefit of the dual valve system is that it retains the kind of supple ride you'd expect from OE dampers

First of all

especially when paired with an aftermarket intake manifold or header/turbo system

as well as performance

Optional 3D Fuel Trim table

HKS Super Turbo Exhaust - WRX STI GVB/GVF Intake Manifold An added benefit of theHKS specializes in aftermarket high performance parts and is perhaps the most well known aftermarket brand in the world. Formed in 1973, and named after the founders Hasegawa, Kitagawa, and Sigma, HKS began tuning engines and cars. Their vision was to tune and manufacture engine components that surpasses OE Manufacturers. They now produce some of the highest quality aftermarket parts on the market, with some of the most innovative design available.