Building a twinscroll setup for Alex’s AP1 this year. He’s piecing his turbo-kit together throughout the season and decided to start gangster with a T4 Twinscroll Manifold. This manifold is based off of our Two-piece Annihilator Topmount
With Alex’s manifold we are going One-piece, as equal length as an F20 has seen, and T4 Divided for proper pulse control..
Next we’ll bolt everything up and place the wastegate(s) after needed modifications to the chassis to utilize this twinscroll setup..