Proflow's EFI fabricated intake manifolds are budget-friendly and performance filled! These Fabricated manifolds feature 3mm (1/8 ) thick T-6061 sheet aluminium construction with 100 percent TIG welds. Available in EFI versions which have 92mm or 102mm throttle body or EFI openings, as well as runners with tapered tops to increase velocity and evenly distribute airflow. Budget and performance work well together when it comes from Proflow in the form of our EFI fabricated intakes.