Your Cart is Empty
SOHO Motorsports Air-to-Air Upgrade for Stillen Supercharger
We have released the Second Version of this kit, making the installation easier and circumventing some supply chain issues. Version 1 full kits have been discontinued for all models, and this page is left up for historical purposes only.
Version 2 Kit: https://sohomotorsports.com/products/soho-motorsports-v2-a2a-supercharger-kit
Backstory:
One of the most popular forced induction kits for the Nissan 370Z and Infiniti G37 is the Stillen Supercharger kit featuring the Vortech V-3 Supercharger. With its ease of install, affordability, available warranty, and California CARB/SMOG compliance, there are plenty of reasons why people select this kit.
Over the years, we’ve seen many of these kits for upgrades, tunes, and maintenance. The main feedback we hear is that it needs to make more wheel horsepower. Different pulleys, fueling, impellers, and even swapping the Vortech unit for a larger supercharger all get the job done, but one upgrade stands out as the best dollar-per-horsepower improvement.
SOHO Motorsports Air to Air (A2A) Upgrade:
Our Air to Air upgrade replaces the Water to Air intercooler and piping. We build these specific to your vehicle to ensure fitment and maximum efficiency. Since building our first turbo kit for the 350Z in 2012, we’ve continued to improve and use our knowledge to outperform competitors. Our intercoolers offer large high-quality cores, in-house fabricated end tanks and brackets, and superior fitment.
With improved airflow and consistently lower intake temperatures, you can increase fuel, timing, and boost to generate more horsepower. We and other tuners/shops have seen over 550 whp on 93 octane and over 600 whp on E85.
The highest WHP we’ve seen on this kit is 667 WHP with E70 fueling. We run a slightly modified version of this kit on a 926 WHP built motor with a Vortech V7 supercharger unit.
Full Air to Air Kits:
Upgrade Only:
- Intercooler and Piping Only - Nissan 370Z and Infiniti G37
- Intercooler and Piping Only - Infiniti Q50
- Intercooler and Piping Only - Nissan 350Z and Infiniti G35
Things to Note Before Purchasing:
The SOHO kit comes with the SI trim Vortech V3 blower, while the Stillen kit comes with the SCI trim. We offer 1050 injector dynamics injectors and a 340 LPH fuel pump for additional fueling, while the Stillen kit offers 600cc injectors and a 255 fuel pump, which will need to be upgraded for the Air to Air setup.
The intercooler bolts to the factory crash bar location, and due to its size, it doesn’t fit perfectly. We offer a “bash bar” as an upgrade for increased protection.
You’ll also need more fuel than the stock Stillen kit provides. We recommend upgrading injectors and the fuel pump and possibly adding a fuel return system for safety and reliability.
If you are in California, this upgrade hasn’t been tested by CARB, and there are no plans to do so. This is sold for off-road use only, and we can’t comment on SMOG/inspections in your state.
Results and Dyno Graphs:
Infiniti G37 7AT
Red Line: Stillen Supercharger Kit with 9 PSI Pulley, Stock Catalytic Converter, and K&N Air Filter on 93 octane
Blue Line: SOHO Air to Air Upgrade on Stillen Supercharger Kit with 9 PSI Pulley, Z1 High Flow Catalytic Converter, and K&N Air Filter on 93 octane
Nissan 370Z 6MT
Complete Air to Air kit with custom-built test pipes and exhaust, TurboGuard Filter on 93 Octane.
Media and Information:
We take great pride in our product, and it's an honor that our Air to Air upgrade is recommended by many shops and found on top tuners' personal cars.
Monchef at Admin Tuning made 612 WHP and 456 lb-ft of torque on his 7-speed automatic daily driver. Jon at Z1 Motorsports is in the process of installing our Air to Air and Stillen Supercharger kit on his 370Z daily driver.
Aaron Labeau is also featuring our Air to Air kit on his G37 sedan over at MotoIQ Project G37S.
Questions, Comments, or Concerns?
We love talking about these cars and our kit. If you have any questions or would like to know more, please reach out to us. You can email us at support@sohomotorsports.com or give us a call at (704) 839-0435, Monday - Friday, 8 AM - 5:30 PM EST. Based on the amount of social media messages we receive, these can sometimes get missed. For best results, please email or call us.
You can also fill out the contact form below!