These are direct fit plug-and-play wastegate actuators for the 2011-2016 F150 EcoBoost 3.5L. With the help of BorgWarner (the OEM turbo supplier to Ford) these are 100% OEM fitment wastegate actuators. Intended as a direct replacement for OEM applications -or- modified engines which will get custom tuning. Available in 3 different spring rates to suit a variety of needs: -Low boost: Direct OEM replacement-Mid boost: Recommended for applications which will get custom tuning-High boost: Only for hardcore applications. Not recommended unless using a built engine. custom tuning mandatory
