Coming Soon: The New Turbo Inlet Pipe – Mazda SkyActiv-G 2.5L

The Design Logic

If you are a car enthusiast, own a new Mazda utilizing the awesome SkyActiv-G Turbo Engine, and have been searching the internet for performance parts then you probably know that CorkSport has been deep in development for this new Mazda platform.  Specifically, CorkSport has been working on the last piece of the intake system puzzle, the Turbo Inlet Pipe. 

This is the black plastic “tube/pipe” that connects the Short Ram Intake System to the turbocharger inlet.  While the SRI System adds some great turbo noises and power gains to the Sky-Activ Turbo, there is still more opportunity for additional performance and sound improvements.  This is where the new CorkSport Turbo Inlet Pipe steps in.  

Mazda 3 Turbo Inlet Pipe Concept Designed by CorkSport

When we started the development of the Turbo Inlet Pipe, we set goals to decrease overall flow restrictions (improving performance & sound output), fit like OEM, and interface great with the already existing CorkSport Short Ram Intake and Heat Shield

We explored the typical metal pipe option but found the biggest we could fit was a 2.5-inch pipe and would still need some amount of crushed section to fit without rubbing.  Not only was this a very minimal improvement in flow VS the OEM 2.5-inch turbo inlet pipe, but it also still reduced the diameter of the system after the MAF housing.  This was quickly dismissed as not good enough.  

Fast forward to the CorkSport design and we ultimately have a result that is very a different but performance-derived design.  While the shape and design may look odd, the logic behind the design is sound.  Let’s dig in. 

Logically Designed to Fit Like OEM

First, let’s compare it to the OEM; the difference is drastic to say the least.  The inlet/outlet is now 3 inches vs the much smaller OEM at 2.5 inches and the overall width and height of the mid-section are immensely larger. 

4th Gen Mazda 3 performance turbo inlet pipe part
4th Gen Mazda 3 Turbo Inlet Pipe
Mazda 3 Intake System Tip

Addressing the elephant in the room…that large scallop cutout in the side of the CorkSport Turbo Inlet Pipe is there to provide clearance for the OEM battery mounting bracket.  Looking at the OEM turbo inlet pipe you can see a smaller scallop cutout as well.  While complicating the design, it’s a necessary evil to maintain OEM-like fitment and not require a different battery and battery mounting setup.  

Future Proofing Our Designs

Now, why did we purposely increase the inlet/outlet to a much larger 3-inch design?  The logic behind that was simple…the MAF housing (OEM and CorkSport) has an internal diameter of 3 inches (76mm).  We wanted to maintain that cross-sectional area throughout the entire intake system, from MAF housing to turbo inlet so we could maximize performance and future-proof the intake design.  

Comparison of OEM and CorkSport Mass Flow Diameter
Comparison of OEM and CorkSport Mass Flow Diameter

In the above image, you can see the CorkSport turbo inlet pipe on the left and a generic 2.5-inch pipe inlet tube on the right.  You can start to see the conflict of MAF size to the turbo inlet pipe size that we refused to compromise on.  

Below is a cutaway view of the MAF housing vs the turbo inlet pipe.  The CorkSport design maintains a constant 3-inch inner diameter to maximize flow performance.  Had we used 2.5-inch piping, there would be an immediate restriction in flow caused by the inlet pipe.  

Comparison of improved airflow of Turbo Inlet Pipe to the OEM in flow.
Comparison of improved airflow of Turbo Inlet Pipe to the OEM in flow

So, yes, a 2.5-inch metal pipe may be a minimal improvement over the OEM 2.5-inch plastic turbo inlet pipe; we had already decided that was not good enough and was not future-proof.  Why is future-proofing important?  Well, we are confident this platform will have larger turbo option(s) down the road that may or may not use the OEM 2.5-inch inlet size.  With the larger 3-inch CorkSport turbo inlet pipe we are planning for those future possibilities.  

Size of Turbo Inlet Pipe Matters

The CorkSport turbo inlet pipe has a 3-inch inner diameter inlet and outlet which is great, but what about the middle section?  This is also where the OEM design has its issues.  

The key was height and profile optimization.  We exploited all of the available space in both height and width so we could maintain a cross-sectional area that matches a 3-inch pipe.  

Turbo Inlet Pipe side view by CorkSport
Turbo Inlet Pipe side view by CorkSport

Looking at a cutaway of the CorkSport design vs a generic 2.5-inch pipe design you can see how we were able to maximize the cross-sectional area even in the location of the battery mounting bracket where the scallop cutout is.  This design process was slow and tedious with many iterations, but it challenged us to think outside the box to develop the best complete intake system on the market.  

CorkSport improved Turbo Inlet Pipe shows a 64% increase in cross sectional air flow.
CorkSport improved Turbo Inlet Pipe shows a 64% increase in cross sectional air flow

Maintaining a true 3-inch comparable cross-sectional area through the entire intake system maximizes flow potential, future-proofs the entire system for future performance modifications, and absolutely enhances sound.  Let the numbers speak for themselves…a 64% increase in the cross-sectional area vs a generic 2.5-inch metal pipe. 

The numbers speak for themselves…a 64% increase in cross-sectional area vs a generic 2.5-inch metal pipe.

The Turbo Inlet Pipe Fits With Our Products

So how does the CorkSport turbo inlet pipe work with the existing CorkSport short ram intake and heat shield?  Perfect!

We’ve designed the system to integrate with the existing SRI and Heat Shield without issue.  If you already have an SRI and/or Heat Shield you will only need to order the Turbo Inlet Pipe kit itself.  

Also, this will fit all applications with the SkyActiv-G turbo 2.5L engine: 2021+ Mazda 3 & CX30, 2022+ CX50, 2018+ CX5 & Mazda 6 and 2016+ CX9.  

This kit will include the turbo inlet pipe, mounting bracket & hardware, the inlet silicone coupler of your color choice (Red, Blue, or Black), and the outlet silicone and valve cover coupler in black (it’s pretty hidden). 

Full design of the 4th generation Mazda 3 Turbo Intake System
Full design of the 4th generation Mazda 3 Turbo Intake System

Next, install the Turbo Intake Pipe with the provided color step-by-step instructions for a seamless install and you’re done!  It’s really that simple and painless.  

Lastly, the turbo inlet pipe is a black plastic nylon-based material and blends into the engine bay great. If you are just now starting your modifications, you can order the whole kit and go for a bright look or an all-black stealth look.  You decide!

Above view of the full Turbo Intake System.
Above view of the full Turbo Intake System

Thanks for checking out CorkSport and the upcoming release of the CorkSport Turbo Inlet Pipe.  We hope this was informative and helpful in your decision-making process to modify your Mazda.

Look for the release of the Turbo Inlet Pipe coming soon! If you want first dibs, our 7th Gear exclusive membership, 7th Gear, provides early access along with free shipping, apparel/sticker pack, exclusive sneak peeks, and first dibs on new releases!

-Barett @ CS

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2019+ Mazda 3 & 2020+ CX30 – License Plate Relocation Kit is here!

Mazda3 License Plate Kit

If you’re looking for a quick and easy mod to boost the appearance of your 4th Gen Mazda 3 and CX-30, the new CorkSport License Plate Relocation Kit is a great place to look. The factory front license plate location is front and center which detracts from the aggressive front grill of the 4th Gen Mazda 3. The CS relocation kit moves the front license plate out of the center of the grill and over to the side for an overall better look. A comparison between the factory and CS license plate locations can be seen below. The CS relocation kit is also super simple to install and takes only 15-30 minutes to complete. Read on for a detailed look at the components included in the Mazda 3 License Plate Relocation Kit.   

First let’s take a look at the tow hook screw that is used to hold the license plate bracket. The tow hook screw is made out of high strength steel and zinc coated so that it will hold up in all types of environments. The tow hook screw also utilizes the factory mounting location to avoid any permanent modifications to the front end of your Mazda. Now onto the main component of the CS kit which is the license plate bracket. Starting out as an 11 gauge 304 stainless steel sheet the bracket is bent to provide quick access to the main mounting bolt and to also flow better with the lines of your front bumper. The license plate bracket includes a quick detach feature so if you ever need to run through a car wash you can quickly loosen the bolt with the provided low profile 19mm wrench and lift it up and off.

We have also positioned the license plate bracket out of the view of the parking sensors so everything continues to work as it should. Finally, all of the hardware included in the kit is stainless steel and we provide tamper resistant screws to hold on your license plate so it’s more difficult if anyone tried to remove it.    

Thanks for checking out the CorkSport License Plate Relocation Kit for the 4th Gen Mazda 3 & CX-30! Be sure to head over to the product page and scoop one of these up if you want an appearance boost for the front of your Mazda.

Mazdaspeed 3 Lowering Springs – V2.0

Speed3 Lowering Springs

CorkSport is proud to announce the new and improved Version 2.0 Lowering Springs for the 2007 – 2013 Mazdaspeed 3.  While the changes are subtle, it never hurts to go back and refine a product that is so well loved by the community

When designing performance lowering springs we want to find the right balance in performance, comfort, and style.  When done right performance springs can make a huge improvement in the vehicle’s overall driving experience.  That is our goal at CorkSport HQ.

The CorkSport V2.0 springs are very similar to the V1.0 with a ride height drop of approximately 1.1” front and 1.2” rear.  This is a fairly aggressive drop, but does cooperate with the stock struts after a bit of bump stop trimming.  That is all clearly laid out step-by-step in the included installation instructions.

Now ride height isn’t everything.  While it looks great, it also needs to perform great.  The CorkSport Sport Springs have specific spring rates so that they perform and feel great for the spirited and daily driven Mazdaspeed 3. 

Up front the spring rate is a linear 3.5K and the rear is a linear 4.5K.   We specifically design the springs with a higher rear spring rate to help the vehicle understeer vs oversteer characteristics and maintain a proper suspension frequency so your Speed feel solid and planted through the curves and over road imperfections.

Overall, the car is going to feel more lively and connected to the road, giving you more feedback and control to enjoy your Mazdaspeed 3.  

You probably also notice a new color!  Yes, our new V2.0 are now blue via a durable and corrosion resistant powder coat finish.  

Thanks for checking out the new CorkSport Lowering Springs for the Mazdaspeed 3.  If you have any questions you connect with us via Facebook, Email or give us a call; we’d love to help.

RX-Vision GT3

Widebody GT3 Rx Vision racecar goodness

I haven’t written any blogs in a while as there hasn’t honestly been anything from Mazda, which has made me stop and go WOW. Most people who have interactions with me would have thought I would be interested in the Mazda 3 TCR. The TCR car looks great, but when I learned Mazda went with the “Spec” engine for the series, it became a “meh” for me. Having an engine that is based on more or less a VW power plant pulling a Mazda around the track made it a lot less interesting. I do know why Mazda chose to go that path, but that is another story.

The next possibe rotary
Mazda Rotary GT3 Concept Car

What did make me go WOW recently was at the Grand Turismo Championships when Mazda announced the RX-Vision GT3 concept! Mazda loves a sexy race car, and if you look at the past two, they have both come out of the Mazda North American studios. This concept is no exception as Julien Montousse, the design chief for Mazda North America, was present during the announcement of the car.

The Mazda Rotary Rx-Vision GT3 Racecar

This is a big deal in my mind, we have just seen a change at Mazda USA with Nelson Cosgrove now appointed as the new director of Mazda Motorsports. Mazda has done everything except come right out and say we are going to build another rotary, and that message looks to be getting stronger. We have seen more patents popping up, calling out more tech and drawings of rotary goodness, including my favorite the top-mounted turbo rotary engine from years back.

Like anything Mazda teases us with, we will have to wait and see what happens. On a personal level, I hope Mazda gets us a 2020 Mazda 3 AWD turbo MT, but that is another one of those “wait and see” dreams from Mazda.


4th GEN Mazda 3 SRI

4th Gen Mazda 3 Power

We are proud to announce our first product specifically for the 4th GEN (2019+) Mazda 3: the CorkSport Short Ram Intake. Gain horsepower, torque, and some much needed sound from your 2.5L SkyActiv-G in only about 30 short minutes. Features include an AEM dry-flow filter, a billet machined MAF housing, a custom designed reinforced silicone coupler, and stainless steel T-bolt clamps that combine to be a great and simple upgrade for your new MZ3. Read on for more details!

Increase horsepower in your 2019+ Mazda 3 with the easy to install Intake
CS Short Ram Intake

We’ll admit this intake has been a bit of a challenge since Mazda has switched to a new style of MAF sensor that is very sensitive to changing the intake. We’re happy to report that we’ve figured everything out and have had 5 cars successfully testing the intake for hundreds of miles with no issues. Now, onto the fun stuff!

Let’s jump right into the fun stuff: power! By removing the restrictive factory intake and filter, and replacing them with the CorkSport SRI, we were able to pick up 5-7WHP and 5-7WTQ when tested back to back on our dyno. This was tested within an hour or so of each other, with no tuning changes, and with the only change being the intake swap. Check out the dynograph down below! For both intakes, the only other mod on the test car was a prototype CS axle back exhaust (coming soon!). This will not affect power gain from the intake as it was installed for both tests.

Dyno proven power gains for your 4th Gen Mazda 3

Power is not the only benefit though. The CS short ram intake offers a great visual boost to your engine bay. You can even personalize your intake as you can select between red, blue, and black silicone and filter as well as polished or black clamps. Appearance is not even the best part-the CorkSport intake adds some much needed growl to the engine to give some more excitement when you get on the gas. It’s not obnoxious, but noticeable and definitely enjoyable.

The CorkSport Gen 4 Mazda 3 SRI installs in 30 minutes
Check our 4th Gen parts selection

To make the power and great noise, each component in the CS SRI has been optimized for performance. Starting at the filter, an AEM Dry-Flow is used for fantastic air flow capacity without compromising filtration. A non-oiled filter is used specifically to prevent issues with the MAF sensor.

Next comes the billet MAF housing. We use a precision machined MAF sensor housing to ensure the diameter of the intake near the MAF sensor is an exact match to the OEM diameter. This keeps fuel trims in check and keeps the check engine light off. A billet MAF housing has the added benefit of looking great, especially when finished off with an attractive laser etched logo.

We have 3 color options available for the 2019+ Mazda 3 intake
CorkSport Short Ram Intake

The MAF housing connects to the throttle body with a custom designed and reinforced silicone coupler. It is a perfect fit with the OEM throttle body and valve cover vent hose while the four layers of nylon braiding keep the silicone strong for years to come. This piece of silicone has the added benefit of being completely smooth on the inside versus the accordion OEM rubber piece. This helps promote flow into your engine.

Finally, all of the components are tied together with stainless steel T-bolt clamps. These clamps offer superior sealing characteristics over a traditional worm gear clamp and are not prone to stripping like a worm gear clamp.

Mazda3 Gen 4 Performance Air Intake System
CorkSport SRI

The CorkSport GEN4 Mazda 3 Short Ram Intake is finally here and it’s a great upgrade to start getting your 2019+ 3 to perform as good as it looks. Be sure to check out the product listing and video and don’t hesitate to give us a call with any questions!