Erin’s S13 has now been fitted with our custom SR20 Turbo Manifold. Using 3.32mm thick 304 grade Stainless Steel with 1 1/4 runners, the manifold features a long merge collector for improved spool and top-end grunt. 16mm flanges insure it can handle the high heat stresses with minimal warping, essential for high revving drift requisites. Previous to running this manifold in Erin’s S13 was putting down 288Kw on 25psi. After installing the long merge manifold and getting the S13 back up on the dyno, the manifold proves its effectiveness by increasing the efficiency and power output. Now putting down 294Kw on a lower 23psi, it is clear to see the redesigned manifold is indeed increasing the top end grunt right through the rev range.