BLOX Racing’s Big Tube turbo manifold is available for Subaru Impreza WRX FA20DIT. This high performance replacement features larger tubing than all other competing brands in the market.
The FA20DIT Big Tube Manifold features 45mm piping from start to end and 11mm thick flanges. The ports have also been opened up to 41mm at the head flanges and 36mm at the turbo flange. In addition to the “big tube” manifold primaries, the larger port diameters allow for greater flow and power production from the OE turbo or similar size aftermarket unit.
Manifolds are constructed from Schedule 40 T304 stainless steel and TIG-welded. The Big Tube Manifold retains the OE original equal-length (EL) design, fitment and turbo placement.