FiTech Dual-Quad 2x4 EFI System We baseline test a dual-quad carburetor set-up on a 500ci Indy Wedge big-block, then swap it out for a self-learning, wide-band, O2-controlled FiTech dual-quad EFI ...

A pulse oximeter measures blood oxygen levels at home and in healthcare settings. Abnormally low readings on a pulse oximeter might require medical care, especially if they are below 92%. Skin color ...