Nostrum Stage 2 DI Injectors - S55/N55

Product Details

The Stage 2 Injectors from Nostrum performance are an absolute must-have for those building big power N55 or S55 vehicles. While there are other injection methods out there - this is the OE upgrade we've all been looking for. These upgraded injectors are a seamless integration and provide the ability to deliver 55% more fuel than stock injectors.

Introducing Nostrum Stage 2 N55/S55 Injectors! These are the largest injectors currently available on the market. They have been designed and tested to flow an incredible 55% more fuel than the stock S55 injectors, and 12% more fuel than the EU5 M5 injectors when compared to stock. That additional fuel flow allows for a significant increase in horsepower, with proper tuning. We estimate that these injectors will flow enough fuel to make over 900 wheel horsepower, and have already fueled more than 700 wheel horsepower vehicles -  without the need for secondary port or meth injection!  

Max WHP Potential: 950 WHP
Flow Rate Increase Over Stock: 55%
Max Operating Pressure: 250bar / 25MPa / 3625psi

Inside the box, you will find everything you need to get your new injectors installed quickly, including pre-installed decoupling rings and detailed installation instructions for a high quality install. When you are ready to tune, Nostrum provides injector tuning data available for your dealer or tuner. Being that everything is installed like a factory part, there’s no need to worry about secondary injection controllers, filling meth tanks, clogged meth injectors, or any of the other complex solutions people use to squeeze more power out of these vehicles. Additionally, these injectors are operating with all the OEM ECU’s engine management system diagnostics and safety functions – resulting in a much happier and responsive system!  

Take full advantage of your Nostrum Stage 2 injectors by pairing them with our HPFP upgrade kit, flowing an incredible 36% more fuel than the stock pumps! That additional fuel flow allows for significant torque increases earlier in the rev range, and provide the injectors with all the fuel they need to make more peak horsepower, when properly tuned. Get the best deal by bundling up! 

-Custom Tune Required-

Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.

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