Welcome to the official GReddy USA blog. -Think of this as our online weekly "GReddy Times," a venue for us to report what's going on or what just happened at GReddy USA this week (new products, new projects, racing news, even online store specials.) On our blog you can see what we are up to in the GReddy Sales floor, R&D garage, on the road or even from our Headquarters in Japan.

Thursday, September 8, 2022

GReddy Team Exhibits again at the Japanese Classic Car Show

 Come out and visit the GReddy Team as the Japanese Classic Car Show returns to Long Beach.


    JCCS, Sat. Sept. 10, 2022 Marina Green Park, Long Beach, CA

Special Event Releases:

Tuesday, June 28, 2022

GReddy A/F-Type Airinx Air Filters for Updating Airinx AY-B Filters in Suction, Intake or Turbo Kits

Designed specifically for use with popular JDM air flow meters which require application specific bolt-on adapters (or a more compact filter size, like the previous "mushroom" shaped Airinx AY-B), is the GReddy Airinx Air-Flow Meter Type System. The basic system is comprised of a specially-sized, large opening GReddy Airinx air filter, matching base plate along with an application specific molded Airinx AY airflow-meter adapter(s). GReddy offers two specific filter sizes, a smaller Airinx S with a 136mm dia. outlet to replace previous Airinx AY-SB filters and a medium sized Airinx M with a 172mm dia. outlet to replace previous Airinx AY-MB filters. This is especially ideal, when upgrading older GReddy Suction/Intake and Turbo kits which utilized previous Airinx AY-SB or AY-MB dome filters with application specific Airinx AY air-flow meter adapters.


The Airinx dry element filter with the molded polyurethane frame incorporates a specially-designed inverted structure with 3-layers of high-performance filtering elements in two specific compact sizes. The 136mm dia. A/F-type Airinx-S measures a compact H85 x T110mm dia. x B136mm dia. to approximate the dimensions of the previous “mushroom”-shaped Airinx AY-SB. (A/F-type Airinx-M: H105mm x T136mm dia. x 172mm dia. to replace Airinx AY-MB) The filter is decorated with molded GReddy Airinx logos and includes an additional GReddy emblem that can be attached to anywhere along the side of the filter element, 360deg. The dry Airinx element is ideal for air-flow meter use and is easily serviceable regular cleanings with mild soapy water and blowing with compressed air.

The key to getting these A/F-type filter bodies to work with the previous AY adapters is the use of a required, matching 136mm dia. baseplate adapter for the Airinx S or 172mm dia. baseplate adapter for the Airinx M. These powder-coated formed-metal baseplate adapters allow the use of the existing molded Airinx AY air-flow meter adapters (that you may already have from a GReddy suction/intake or turbo kit.) The baseplates also have provisions for mounting brackets and a port for optional sensors, if necessary. 

There are two series of S and M-sized Airinx AY molded-polyurethane adapters. They come in various application specific shapes to match many popular Japanese air-flow meter types, like for the RB26, Z32, RB25, RB20, SR20, VQ35, 1JZ and 4G63. Also available are standard round adapters that range from 50mm all the way up to 100mm diameter, if you eventually decide to eliminate the factory air-flow meter in the future. (or have space confinements and require a lower-profile air filter assembly, than the standard Airinx S or M.)

Click on the images below for a full list of Airinx AY-S and AY-M adapters.


See the full line of Airinx Air Filters on greddy.com

Wednesday, June 15, 2022

GPP FK8 Cooling Systems

12058003 - GPP FK8 Civic Type-R Hi-Capacity Oil Cooler Kit 
    12058050     - FK8 Civic Type-R Transmission Cooler Kit
 17550110 - Optional driver-side mesh for std. 10row Oil Cooler. 

12058101 - FK8 Civic Type-R-28E Intercooler Kit
12058103 - FK8 Civic Type-R-24E Intercooler Kit *

14258003 - FK8 Civic Type-R Only Front Bumper Bar - Black

12053803 - FK8  TWR Aluminum Radiator

12058003 - GPP FK8 Civic Type-R Hi-Capacity Oil Cooler Kit

 12058050     -  Transmission Cooler Kit (13row lower left)

 17550110 - Optional driver-side mesh for std. OEM GPP-modified

14258003 - Competition Solid Front Bumper Bar 

12058103 - XL Front Mounted Intercooler (+ 50-state Street Legal)

12053803 - FK8  TWR Aluminum Radiator

Wednesday, June 1, 2022

GReddy is Hiring!

 Entry-level Warehouse, Shipping and Packaging position

GReddy is hiring!  Entry-level Warehouse, Shipping and Packaging position - Part-time 20-25hrs per week.  Flexible hours, example: 5days M-F 9am-1pm or 2-3days M-F 9-6.  Must have the ability to lift 70lbs.  Basic knowledge of performance parts a plus.  Looking to hire someone immediately.  Please send your resume to jobs@greddy.com (no DMs). Thank you - GPP

Tuesday, May 24, 2022

Two New JDM GR86 / BRZ Exhausts


P/N 10114300


P/N 10110737

also available now the new GReddy X Voltex Racing GR86/BRZ Aero... (link)

and GR86 specific GReddy Shift Knob (Designed specifically for the GR manual trans shifter)
P/N 14500573 (GSK-A04)

Friday, May 6, 2022

The Newly Updated ShopGreddy.com

 Click the photo to check out our newly updated official online store for No. America, www.ShopGreddy.com... (desktop and mobile)

Buy GReddy, GPP, Rocket Bunny, Pandem and Boost Brigade direct!

PRO TIP - Check back frequently for Menu item: Featured Collections > Next Release, for updates on the next ShopGreddy Exclusive "Drops" - usually on a Sat. 9:00am PST

Thursday, March 31, 2022

GReddy PROFEC Boost Controller - Video Series

GReddy PROFEC - electronic boost controller

- Link below leads to our www.GReddy.com site for instructions that are downloadable PDF for this unit and many of our other products. Instructions - Profec Manual

Part 1
Episode 1 - Chapters 
0:00 Ep.1 - What's in the Box?
3:07 Hardware Install
3:15 12v Power source
3:45 Mounting power unit
4:05 Harness
4:48 Pressure source
6:24 Valve unit
8:37 Control unit

Episode 2 - Chapters 
    0:00 Ep. 2 - Pre-Start Setup 
     0:16 Button Meaning 
     1:38 Start-up 
     2:10 Pattern 
     3:37 Direction 
     4:11 Bright 
     4:23 Unit 
     4:39 Alarm 
     5:27 Last
     5:50 Start Boost 
     6:14 Lock

Episode 3 - Chapters     0:00 Ep. 3 - Basic Boost Setup 
     0:51 Set 
     2:25 Tuning Session 
     2:58 Baseline Dyno Results 
     3:27 Set boost at 20% Dyno Results 
     3:39 Gain 
     4:24 Gain adjustment Dyno Results 
     4:54 Start Boost 
     7:01 Peak 
     7:27 Warning 
     8:20 Limiter 
     9:23 Final Dyno Results Before/After

Friday, February 4, 2022

GPP is proud and honored to be part of this project with Ken Gushi supporting TMI autonomy research.

 Toyota Research Institute (TRI) demonstrated a new research milestone in autonomy, providing a glimpse into the future of safer mobility for all.

GREDDY PERFORMANCE PRODUCTS is proud and honored to be part of this project with Ken Gushi supporting their research.

Full story available at https://www.tri.global/news/evdc-drift/


Feb.2022, Toyota Research Institute (TRI) demonstrated a new research milestone in autonomy, providing a glimpse into the future of safer mobility for all.

As revealed in this video, TRI researchers successfully programmed a vehicle to autonomously drift around obstacles on a closed track - a world first. Combining a deep knowledge of both vehicle dynamics and control design, TRI’s Nonlinear Model Predictive Control (NMPC) approach extends the vehicle’s operational domain to the very limits of its performance. The idea behind this research is to utilize controlled, autonomous drifting to avoid accidents by navigating sudden obstacles or hazardous road conditions like black ice. 

“At TRI, our goal is to use advanced technologies that augment and amplify humans, not replace them,” said Avinash Balachandran, Senior Manager of TRI’s Human Centric Driving Research. “Through this project, we are expanding the region in which a car is controllable, with the goal of giving regular drivers the instinctual reflexes of a professional race car driver to be able to handle the most challenging emergencies and keep people safer on the road.” 

Every year, car crashes result in nearly 40,000 fatalities in the United States and about 1.35 million fatalities worldwide. While most crashes occur in mundane situations, in some extreme situations drivers may need to make maneuvers that take their vehicle close to and, at times, beyond normal limits of handling. 

One year ago, TRI and the Dynamic Design Lab at Stanford University set out to design a new level of active safety to help avoid crashes and prevent injuries and fatalities. With the support of automotive performance specialist GReddy and drift legend Ken Gushi, today’s achievement is another step in that journey. By building skills comparable to an expert driver, this technology can amplify and augment a regular driver’s ability to respond to dangerous and extreme situations, helping keep people safe on the road.    

“When faced with wet or slippery roads, professional drivers may choose to ‘drift’ the car through a turn, but most of us are not professional drivers,” said Jonathan Goh, TRI Research Scientist. “That’s why TRI is programming vehicles that can identify obstacles and autonomously drift around obstacles on a closed track.”

This achievement brings TRI researchers closer to understanding the full spectrum of vehicle performance. The software advances announced today calculate a whole new trajectory every twentieth of a second to balance the car gracefully as it goes around the track. 

Wednesday, January 19, 2022

New and Improved TYPE-FV2 Blow-off Valve


Introducing an upgraded version with new features and new designs!!

Product Features:

GReddy BLOW OFF VALVE TYPE-FV2” inherits the floating valve structure that was popular in the previous FV model, while improving with a more sophisticated design, easier adjustment, and even more reliability.

A hand turning detent knob that adjust the preload setting of the spring does not require any tools.  It is also now possible to change the direction of  the hose union on the top cover, so it can also be adjusted 360°, also without tools, to best suit your installation. 

The mounting flange and inlet retain the same dimensions as previous GReddy blow-off valves  (TYPE-RS, RZ, and FV) so the TYPE-FV2 can easily replaced any of the older models.


  ■ Product name:GReddy blow-off valve FV2
  ■ Part Number:11501666

Also available are application specific bolt-on kits for popular applications: R35, R32/R33/R34, ECR33, HCR32, S14/S15, JZX100, JZA80, ZN6 Turbo, GDB, GRB, CT9A, CZ4A, FD3S and more...

    Click here to download the instruction manual - (instruction manual)

■ Prevents idling problems that can tend to occur with other blow-off valves.
The floating valve mechanism allows the valve to react quickly because there is no need to apply unnecessary excessive preload to the spring.

■ Quick response even at low boost situations. 
The floating valve mechanism prevents premature opening and closing of the valve.

■ Uses a floating valve structure (FV = " Floating Vavle")
By adopting a floating valve design, the diaphragm and valve operate independently, in this way it is possible to achieve a valve response that exceeds that of the previous models and a stable blow-off situations throughout a large boost range.

■ Uses a new rotation-adjustable top-hat.
The 360 ​° adjustable top cover eliminates the need to disassemble the top hat, to changing the orientation of the hose union.  This greatly improving usability and ease of installation, compared to previous models.   

■ Preload adjustment with detent adjustment knob. 
The easy-to-rotate detent adjustment knob makes it easy to adjust the preload with precision, given its large adjustment range (about 5 full rotations - Lock to lock) without the need for any tools.

Operation of blow-off valve FV2

■【When the throtle is open】
The dual valve spring, boost pressure from the surge tank or intake manifold, and support spring strongly press the valve to prevent relief during high supercharging.


■【When the throtle is closed】
The surge tank pressure becomes the maximum negative pressure, the diaphragm and dual spring are pulled up, and the valve is released. The valve pressed only by the support spring is pushed up by the residual pressure in the pipe, and the residual pressure is released instantly.


■【When the throtle is closed (after blow-off)】
Even if the pressure inside the surge tank remains negative and the diaphragm is pulled up, the support spring closes the valve quickly when the residual pressure is released to prepare for the next accelerator ON. This will launch the boost quickly.

■ Blow-off valve FV2 optional parts


A. Aluminum mounting flange

Composite gasket mounting bolts and nuts included, Fits GReddy blow-off valve type RS, RZ, FV, FV2

B. Outlet Adapers (hose attachment)
Return is for transfer mounting (black alumite) GReddy blow-off valve type RS, RZ, FV common

・19mm.   p/n:11900440

・29mm.   p/n:11900441

・32mm.   p/n:11900442

・34mm    p/n:11900443

・Replacement FV2 horn adapter  p/n:11900450

C. BOV Gasket