There are 4 interchangeable 10-32 threaded vacuum port fittings provided to cover all scenarios

Internal nine-axis EMU

CAR-M44-SCR5146

MonsoonX G4X ECU – Advanced Engine Management

E46 M3 Track-Spec Carbon Fiber Hood upgrade There are 4 interchangeable 10-32True Carbon. Track Proven. Made in the USA. Built for serious drivers and competitive builds, the 5150 AutoSport Track Spec Carbon Fiber Hood for the BMW E46 M3 is engineered for performance without compromise. This isnt a fiberglass core with a carbon overlayits a true, full carbon fiber hood, manufactured entirely in the USA using aerospace grade materials and motorsport grade craftsmanship. Designed to reduce front end weight and improve cooling