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Nitrous Express Holley Hi-Ram plenum plate conversion kits bolt between the upper and lower intake manifold on Holley Hi-Ram manifolds for a quick and clean install. Nitrous and fuel are injected into each cylinder from the side of the runner, providing direct port-like distribution without having a flow-restricting nozzle or spray bar in the runner. High-tech Holley Hi-Ram plenum plate conversions are made from billet aluminum with passages machined directly into the plate, so there's no need to worry about spray bars breaking or spinning.
Not Yet Reviewed
$954.31
Upgrade your current single stage system. Nitrous Outlet EFI dual-stage single nozzle systems are the simple way to add another stage of nitrous via their 1/8 NPT wet nozzle, break up a large shot, and keep the tires hooked up and going down the track nice and straight. They include everything needed to add horsepower to your late model EFI vehicle--hardware, wiring, jetting, solenoids, hoses, and nozzles. They also include a wide-open throttle (WOT) switch that only allows the systems to be activated when the motor is at full throttle. This feature will help in preventing engine damage and lean spikes. These complete race-proven Nitrous Outlet systems will convert your system to a true dual stage capable system.
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$1,072.99
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