The DOC Race Twinscroll manifold is similar to our Topmount manifold applications. Our Twinscroll manifold is for maximum flow of your engine and turbo including the best possible spool and no limitations of the maximum output of your combination. DOC Race Twinscroll manifolds have had years of development in order to utilize the proper exhaust pulses to eliminate unwanted exhaust backpressure and vale overlap, in-turn giving you maximum airflow. This manifold is simply the most efficient available on the market! D.O.C. still applies our elaborate porting process to complement maximum flow within ALL of our manifolds.
**ALL DOC RACE MANIFOLDS ARE SPECIAL ORDER, AND ARE BUILT TO ORDER IN THE USA AND TAKE 1-3 WEEKS TO BUILD**
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