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 system and retest it.

Low oxygen levels in the blood can alter the genetic makeup of key immune cells, weakening the body's ability to fight infection, new research shows. Subscribe to our newsletter for the latest ...