KAT-A7697 - LT5 High Flow HPFP Bypass Line

Part Number KAT-A7697

In our E85-fueled, high-horsepower LT5 Engines we noticed the fuel feed pressure to port injection rails experiences significant drop-off.

No matter the modifications on the factory FICM, the system simply cannot keep up with the fuel flow needed for E85. With that, Katech has engineered a solution to safely supply fuel to the port injection system independently of the high pressure fuel system. Our solution is running the port injection "in-parallel" with the high pressure side instead of "in series" like GM designed.

With no screws or hardware, the Katech High Flow HPFP Bypass Line will allow users to seamlessly run 100% E85 at ANY power level, without any fuel rail pressure drop-off.

This install can be done in the car without removing the supercharger.


-Made from BMRS race grade fuel hose with pre crimped fittings

-Fits all LT5 engines including 2019 Corvette ZR1