1000cc Nissan GTR VQ37 Port Fuel Injectors

What sets the Nostrum Vq37 PFI apart:

• Spray targeting specific to Nissan engine 
• Direct fitment with no adaptors 

Nostrum High Performance’s next-generation port fuel injectors are designed to fit the architecture of your engine using state-of-the-art CFD software which takes exact fuel injector location, intake manifold design, and cylinder head geometry into account.

Nostrum PFI injectors are all tested on Nostrum’s temperature and pressure controlled two station production PFI injector test stand. This testing includes multiple preconditioning cycles followed by testing for tip leakage, resistance, inductance, dynamic flow, static flow as well as injector opening and closing time. Nostrum PFI injectors are then sorted and batched based on dynamic flow, static flow, offset, injector opening time, and injector closing time (based on SAE J1832 low-pressure gasoline fuel injector testing standard).

Every Nostrum manufactured part is backed by a limited lifetime warranty. Our products are comprehensive solutions that come complete with everything you need inside the box, including detailed installation instructions. Tuning guides are also available for your dealer or tuner. We have customer service and calibration engineers on staff to provide you with any support that you may need, from installation to tuning.

Whats comes in the box:

• Tested and flow matched set of six injectors. 
• Injector features a split gamma spray pattern designed via CFD for optimal performance 
• Direct replacement – no adapters, spacers or electrical harness needed 
• E85 compatible  
• Installation Guide provided  

• Nissan GTR (2009-2020) 
• Nissan 370Z (2009-2020) 
• Nissan Q50 2014-2015 (3.7L) 
• Infiniti G37/G37x 

Dyno graph sponsorship results:

*Horsepower and Torque numbers are approximate and can vary significantly depending on numerous factors including what supporting upgrades are done to the vehicle, ambient temperature, elevation, road surface, tire selection & condition, fuel octane and quality, vehicle weight, and more.  The advertised numbers herein are based on optimal conditions and utilizing proper supporting modifications.  Your results may vary.

Frequently ask questions:

Q: Why do your numbers say I will make less horsepower on E85 than 93 octane? 

A: Great question! The numbers we list in the product descriptions are similar to the numbers a turbo charger lists for air flow. The numbers are the "fuel system capacity to generate power" regardless of the other engine system limitations (air handling, mechanical limitations, knock propensity). Essentially the numbers are calculated assuming "sufficiently large air flow", "sufficiently capable mechanical assemblies" and disregarding knock limits. The equation uses actual observed engine volumetric efficiency (when available from sponsorship vehicles) and fuel capacity (including target pressures) to calculate power. Gasoline has more energy per mass volume than E85. So the higher fuel flow capacity will mathematically generate higher power potential for a gasoline than a high ethanol content fuel. The other variables (air flow, spark, rotating assembly strength, charge cooling, mechanical assembly strength) are highly variable from build to build. This is why we state horsepower capacity for the fuel system – representing the potential of the fuel system if you have all the other aspects of your build addressed!  

Q: What's different about your current injectors and your old ones?  

A: The"old" MK1 injectors were branded as "KDI" (Kinetic Direct Injectors) which referred to the spray methodologies we developed and patented. The original injector was developed in 2013-2014 and is called the Premium KDI or P-KDI. They were a great first step into DI and were unchallenged for many years. However they were quite complex to manufacturer and challenging to support (difficult to tune). We discontinued the original P-KDI product family after launching our new staged product families. Today we are a much more evolved company with extensive asset base, technical capability, expertise, and all new standards of performance. The products we are making today are less costly to make, yield higher quality results, and are easy to tune. Our evolution of product architectures is a result of our endless continuous improvement journey and the investments we made in our assets, our people, and our capabilities towards our ultimate purpose to Fuel Life's Great Moments. Starting in 2022, NHP launched a compliance program to address future legislative pressures. Part of our strategy includes optimizing injector performance and spray quality to comply with EPA & CARB.