How to Install an STi Header
An STi header, or the exhaust manifold, serves as a delivery system. The STi header/exhaust manifold collects the gas that’s produced by the engine and releases it out into the surrounding atmosphere via the...
STi Engine Mods / STi Exhaust / STi Interior Mods / STi Videos
by adamk · Published September 6, 2013 · Last modified March 13, 2020
An STi header, or the exhaust manifold, serves as a delivery system. The STi header/exhaust manifold collects the gas that’s produced by the engine and releases it out into the surrounding atmosphere via the...
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