The F-series (Fabricated) Plenum was designed to solve performance limitations and strength issues that plague the OEM plenum but at a lower price point. The stock plenum frequently fails at modest boost pressures and is highly restrictive which can limit the power potential of your X3 in higher boost applications. We have seen power gains of 5-12 HP (depending on boost level) with adding our plenum alone.
- Intake runners and injector bosses are machined from a solid block of 6061-T6 aluminum and designed for optimal flow
- The fabricated portion is CNC bent 1/8” TIG welded aluminum for maximum strength
- The throttle body attaches to a CNC machined flange which is sealed with an o-ring to eliminate the OEM rubber hose clamp connection
- A water jetted support brace is welded to the connection pipe for durability under the most grueling conditions
- Built in ¼” port is provided for a BOV or boost gauge