LSX™ / LSXR™ Direct Port Nitrous System

zex-logoThe ZEX™ LSX™ / LSXR™ / LSXRT™ Manifold Direct Port Nitrous System is the only custom made system for the FAST™ GM LS Intake Manifolds. Like all of our EFI Direct Port Systems, the kit includes custom distribution flex lines for easy installation. Designed to add from 75-300 horsepower, the kit uses a patented injector nozzle that delivers optimum nitrous and fuel atomization and activates at wide open throttle using our patented throttle position sensor technology.

  • Fully adjustable from 75-300 HP w/ supplied tuning jets; Perfect for mild to wild performance
  • A complete wet nitrous system; Everything is included for a safe, proper installation
  • Distribution flex-lines for easy installation on the popular FAST™ LS Intake Manifolds
  • Works safely on stock or modified engines; Naturally aspirated, turbo or super charged


LSX™ / LSXR™ / LSXRT™ Manifold Direct Port Nitrous System

LSX™ / LSXR™ / LSXRT™ Manifold Direct Port Nitrous System


• Active Fuel Control™

Active Fuel Control™ is a revolutionary nitrous tuning and safety feature. In your engine, a vacuum is created as nitrous gas is sprayed across the open end of the nozzle’s fuel transfer tube. As bottle pressure rises or lowers due to bottle temperature changes, the speed of the nitrous discharge varies to the same degree. This causes the level of vacuum draw in the fuel transfer tube to vary as well. This variable vacuum draw causes the ZEX™ nozzle to actually “pull” more or less enrichment fuel into the engine. This means your engine never runs dangerously lean or overly rich. The nitrous tune-up stays dead-on for maximum engine safety and power at all times.

• Fuel Shear™ Technology

Fuel Shear™ Technology injects enrichment fuel using a fuel transfer tube. This tube allows the ZEX™ nozzle to directly inject fuel into the highest velocity area of the nitrous plume. This high-speed nitrous shears the fuel away from the tube, atomizing it to levels other nozzle designs never achieve. This high level of atomization ensures perfect fuel distribution from cylinder to cylinder, ensuring one cylinder is never dangerously rich or lean, like competitor’s nozzles. This finely atomized mixture delivered by the ZEX™ nozzle also burns more powerfully and maximizes the horsepower you get from your nitrous system.

• TPS Sensor Activation

Our throttle position sensor switch is truly innovative. For years, nitrous systems have been activated by use of crude push buttons and throttle arm activated micro switches. These devices were very difficult to install and were constantly failing because of the extreme temperatures found in vehicle engine bays. ZEX™ integrated advanced microprocessor control circuits into our nitrous systems so that they “learn” the voltage curve of an engines throttle position sensor. This enables our nitrous systems to activate at wide-open throttle, precisely and reliably, every time.

For more information contact a Karbelt Pickering sales professional.

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