2.3 EcoBoost Deck BraceIts fairly common knowledge that the 2. 3 EcoBoost engine block is a potential weak point for tuning enthusiasts with many theories banded around suggesting the head gasket remains the initial source of problems or that certain points of the block are prone to failure either due to external heat sources or simply because the material thicknesses at certain points is just not adequate enough Any number of these theories may be relevant or even correct