OEM fuel lines are being modified for higher flow, but it does little to nothing. They are also prone to breakage and failure in high vibration racing applications (see photo). A high pressure spray from this breakage can burn a car to the ground in minutes.
This 5500 psi soft line is what we use in the race cars, and it eliminates that risk. This allows fuel flow capacity beyond 1000hp in direct injection only applications. The pressure racing is 2x the operating pressure of the CTR DI system.