A List of Your Local NATOR Communities – What Makes Us Family

Ever wondered how to connect with your local Mazda crews and clubs?

Or have you ever gotten connected and then lost your ride somehow? For some of us it’s a crash, others of us sell our beloved Mazda and aim at our next dream car, or heck, even the necessary minivan.

What happens then? Not only did you lose your favorite car, but seemingly you lost out on the community as well. Does it make sense to show up to your favorite meets if you no longer drive the “proper” vehicle?

When it comes to the Nator groups, the love is still there regardless of what your next ride.

According to Micha Fullen, this is exactly how it goes; and it’s about so much more than the cars themselves:

“While at the annual Midwest meet this year in St Louis Missouri, washing my hair in the shower I had a thought, “Micha, why do you still come to this event when you don’t even own a Mazdaspeed anymore?”

I told myself, that being a Mazdaspeed owner past, present or future, is like being in a family. Especially when you involve yourself in the community and clubs that are offered throughout the country. Me, I’m a Nator Guy.

Year after year, we collectively travel thousands of miles to attend an event centered around vehicles that some of us don’t even own anymore. It’s crazy huh? Do the same thing, show up without owning the ‘correct’ Model Vehicle, at a VW or Honda meet and you get blacklisted and shunned.

Mazdaspeed owners don’t kick you out, or tell you that you shouldn’t be there. We just call each other; funny, and sometimes very rude, names. Then ask to race your new vehicle on a track, dragstrip or parking lot. (More recently it’s been even helpful to all of them that I bought a truck… because we all know with spirited driving, and some showing off, something is bound to go wrong)

I am closer to my Mazdaspeed family than I am to my own. This has been true since I bought my Speed 3 Jun of 2011. I had some problems with my car(s) and my Mazdaspeed (Nator) family came to my aid. But when that same family had problems of their own, I drove many miles or sometimes across multiple states to help them.

Corksport goes out of their way to attend these events. Not so much pushing parts, but to welcome family with open arms and stay connected to the grass roots of our community.

I met Barrett this year and even having never talked to him, he was the top 3 nicest dudes I have ever met. He got involved and talked shop with the majority of everyone in attendance. Kim is also a major voice in the community, listening to what the people want and bouncing ideas off of people to find how CorkSport can continuously push and evolve in this platform. She shows up to multiple events a year, stays in contact even throughout the winter and is always helping her “brothers and sisters” with their own endeavors, even if it doesn’t involve Corksport.

This year, if you were at the Midwest meet, you would see that a good majority of people have moved on to new platforms, specifically the new ecoboost options from Ford being very popular. Adrienne K with her Focus RS, Matt D with his FoST and Ryan P with his brand new FiST, and myself, I went way to the left with the new Raptor (Hey it has 2 turbos mmmmmkay).

It doesn’t matter what happens in your life, or even if you have moved on, we all got our start with Mazdaspeeds and we always stick with Family.”

As you see, being a Mazda owner is about the community, the family, the connection to other Mazdaspeed Enthusiasts.

And being an enthusiast isn’t always defined by the fact you still own a Mazda. It’s defined by being a car family. There may be groups that require you to own a Mazda to show up, but when it comes to Nator, once a Mazdaspeed Nator Family member, always one.

If you’re curious about where to connect, who to reach out to, or how to get in touch with your local Mazda club, check out the list below.

While we would love for this list to be exhaustive, it’s not, so if you’re currently involved in a club not listed, please let us know and we’ll be sure to make it easier for other CorkSport followers to connect with your group!

Download PDF of List: NATOR Clubs List

CorkSquad	https://www.facebook.com/groups/1634041806878345/	Savannah GA
Souther Street Crew	https://www.facebook.com/groups/454444514600458/	GA
MMOC	https://www.facebook.com/groups/MIMazda/	Michigan
ClubMPS	https://www.facebook.com/groups/clubmpsnz/	New Zealand
LVMazdas	https://www.facebook.com/groups/LVMazdas	Las Vegas
NoVA Mazdaclub	https://www.facebook.com/groups/321399927926454	VA
Mazda MIata Mx5 WA/OR	https://www.facebook.com/groups/1698103380420298	WA/OR
Mazda Militia	https://www.facebook.com/groups/mazdamilitia	WA
Nothern Mazda Militia	https://www.facebook.com/groups/286006598276940
Texas Mazdaspeeds	https://www.facebook.com/groups/TexasMazdaspeeds	TX
PNW_Mazda	https://www.facebook.com/groups/PNWMazda	WA/OR
Mazda 3 Owners Australia	https://www.facebook.com/groups/Mazda3OA	AUS
Mazdas of Kileen/Ford Hood	https://www.facebook.com/groups/texasspeeddemons	TX
Nator Oregon	https://www.facebook.com/groups/NatorOR	OR
Nator TN/KY	https://www.facebook.com/groups/206647016088166	TN/KY
Nator Oklahoma	https://www.facebook.com/groups/NATOROK/	OK
Nator NC/SC	https://www.facebook.com/pages/North-Carolina/104083326294266	NC/SC
Nator Minnesota	https://www.facebook.com/groups/NatorMinnnesota	MN
Nator Georgia	https://www.facebook.com/groups/163448653866393	GA
Nator Florida	https://www.facebook.com/groups/1298072073575997/?ref=br_rs	FL
Nator Missouri	https://www.facebook.com/groups/natormo	MO
Nator Arizona	https://www.facebook.com/groups/708796579135806	AZ
Nator New Mexico	https://www.facebook.com/groups/270637012974823	NM
Nator San Diego	https://www.facebook.com/groups/natorsd/about/	CA
Nator DC Metro	https://www.facebook.com/groups/147772498652109	DC
Nator WA	https://www.facebook.com/groups/948847285235072	WA/OR
Nator WI	https://www.facebook.com/groups/379868465454404	WI
Nator Chapter E	https://www.facebook.com/groups/176597409073225/	FL
Nator New England	https://www.facebook.com/groups/255796874460817	New Englan
Nator Houston Miata	https://www.facebook.com/groups/446031202177809	TX
Mazda Owners of Nebraska	https://m.facebook.com/groups/733704760063616	Nebraska
Speed Squad	https://www.instagram.com/speedsquad.tm/	Quebec Canada
Mazda Flow London	https://www.facebook.com/groups/934300966591060/	Ontario Canada

October 3, 2017September 21, 2023

The Wait Is Over: The CorkSport Performance Intake Manifold Is Here

Can you believe we started this project back in 2012?

Yes, it’s been a long journey, and a few too many “two weeks”, only to find that more improvements were needed. We’ll be frank, this has been a challenging project to tackle, but we have prevailed. We have pushed past the challenges faced in manufacturing the complex design, and are proud to announce that we are ready to present you with the most complete solution for the Mazdaspeed 3 and Mazdaspeed 6 platform. Introducing the Mazdaspeed Intake Manifold!

The CorkSport Intake Manifold is here for those of us who want some more flow in our lives.

Our design focuses on performance without sacrificing OEM fitment or drivability. With equal flowing runners, higher flow than OE, and TMIC fitment, it truly is a complete solution to the OE intake manifold.

Close up shot of the CorkSport Intake Manifold installed on the Mazdaspeed engine.

Fitment is huge when it comes down to large engine components like intake manifolds. While designing the CorkSport IM, we wanted to retain as many OE features and mounting locations as possible while maintaining neat and tidy packaging. By doing so, we were able to keep components such as the TMIC, OEM throttle body, MAP Sensor, and even the oil dipstick bracket in OE locations. This all means a relatively quick and easy part to install, but we made it even easier by clearing some space around hard-to-reach areas.

The CorkSport Intake Manifold may fit like OE, but that’s where the similarities end.

The CorkSport Mazdaspeed Intake Manifold is designed with performance and drive-ability in mind, with the larger plenum design and long cylinder runners. Since the intake plenum is about three times larger than OE, there is an increase in high RPM power capacity without sacrificing throttle response and drivability. By maintaining the length of the cylinder runners (vs the typical aftermarket intake manifold), we improved mid-range power while still having peak RPM capacity with the single runner design vs. an OE split runner design.

Mazdaspeed Intake Manifold with larger plenum design

The increase in performance also comes with an increase in engine health.

By optimizing the design for equal flow between runners, the CorkSport IM eliminates the flow imbalance of the OE intake manifold. This significant imbalance causes cylinders to run excessively lean or rich, affecting engine durability and performance. Check out the graph below to see the difference. Not only does the CorkSport Intake Manifold outflow the OE design by 70CFM per runner on average but also significantly reduces the flow imbalance to 2% or less vs the OE imbalance of 21%.

This means your engine can run stronger, longer, and have a higher potential to make power.

CFM Bar Graph for the CorkSport Mazdaspeed Intake Manifold

But enough talk about numbers and flow, let’s SEE some numbers. The dyno graph below shows the difference before and after the CS IM on a Mazdaspeed3 with a CorkSport TD05H-18G turbo equipped. Not only was there an increase in power and torque across the entire RPM range, but the turbo also spooled around 100RPM faster than with the OE intake manifold.

Dynograph testing for the Mazdaspeed Intake Manifold

But wait there’s more! Along with the overall design improvement over OE; there are additional design features that you need to know about.

Firstly, we increased the size of the throttle body opening. This allows the OE throttle body to work great but also allows for a larger throttle body to be installed without modification.
Next, there are added fueling ports for each runner. They are standard 1/8-27 NPT ports that can be used with methanol nozzles or other fueling options.
Finally, there is an extra 1/8-27 NPT port that can be used for boost controllers, gauges, or the like.

Now you may be thinking, But there aren’t any larger throttle bodies available. To that, we say, not just YET!

the CorkSport throttle body on the Mazdaspeed intake manifold

Along with the great features of this new Performance Intake Manifold, we are also providing nearly all of the hardware you need for installation; that is, the brass fittings that come pre-installed on the intake manifold and the additional hardware and hoses needed for auxiliary components.

Mazdaspeed intake manifold hardware included

Now we would like to circle back to where we started with this conversation:

We here at CorkSport pride ourselves on doing everything in our power to provide you, our customers, with the best possible products out there. We also are committed to being real with you guys as well, because we too are Mazda-lovers who get a thrill out of overcoming the toughest challenges that stand between us and the ultimate car experience.

The most challenging aspect of this project has been getting the manufacturing to an acceptable quality, and consistent among each intake manifold. We have tested the intake manifold on multiple cars in-house and with various beta testers, the results speak for themselves: this is an exceptional performance product that your Mazdaspeed will love to have.

Believe us when we say that this design is tough to manufacture, and that process results in no two parts being exactly the same visually; but it also means that each manifold has its own unique look and character, the same way our cars do.

Mazdaspeed intake manifold interior view

top view of the CS mazdaspeed intake manifold

We guarantee that the CorkSport Intake Manifold will give you the best performance out there, but if for whatever reason you’re not satisfied with the unique look of your IM, please contact us and we’ll be more than happy to take care of you like we always do. – We’ve got your back!

The intake manifold installed on the Mazdaspeed engine.

That being said, if you’re looking to take your Mazdaspeed to the next level in both speed and reliability, the CorkSport Mazdaspeed Intake Manifold is the best comprehensive solution on the market.

These babies are only available while supplies last, so don’t wait, they’ll be gone before you know it!

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September 28, 2017September 13, 2018

Dear Car Clubs: We Want To Hear From You!

Dear Car Guy,

Did you know there are LOTS of Car Guys and Gals out there in the Mazdaspeed world?

From Nator Clubs and Mazda Nova Clubs to Mazdaspeed and Meet Up Clubs, the branding is slightly different for each area and each group, but the heart and soul of the people who get involved stays the same.

Great people, big appetites (for speed and food), awesome tastes in beers and booze, and a genuine care for their fellow club members. I have made sure to attend meets and get to know the nitty gritty center of our Mazda Community, mostly because who doesn’t want to do Car stuff with their Car friends. However, I also do it because it’s an integral part of CorkSport’s vision, to give unprecedented levels of customer support and connection to the Mazda Community.

We ultimately just want to LOVE OUR CUSTOMERS, and I’ll take one for the team and meet you Guys and Gals face to face.

We’ve been to the MidWest Nator meet, the East Coast Nator Meet, and the Boise Mazda Take-over event this past year. We have also hosted our CorkSport Dyno day and given the west coast Mazda community a place to gather as well! Let me just say, it’s been amazing getting to know everyone, and seeing some awesome familiar faces.

The one thing that really stands out for me is the sense of community that is built at the center of all of this. I’ll admit I’m a people person, so of course YOU are my favorite part of working for CorkSport, however, it’s a community like no other, regardless of the title it goes by. The values of the Mazda community stay fairly similar, with mods, install days, track days, meet ups, and expansion of the love we all share for the Mazda Platform.

A group of awesome individuals, getting together, teaching those who don’t know how, and taking are of those who do (and still break down).

There are Groups all over the US (and I’m sure international), that we don’t even know about. It’s my hope that when you read this, you pass me your group pages, club names, social addresses, etc., so that CorkSport can help others in your area connect!

Near and Far, no matter where you are, let CorkSport hear from you!

Until next time, stay safe, stay fast, stay happy my friends!

-Kim @ CorkSport

November 28, 2016August 14, 2023

New Product: Mazdaspeed Camshafts for DISI MZR Motor

After multiple years of testing, design and research, CorkSport is proud to announce its release of camshafts specifically designed around the MZR DISI platform. This kit is engineered to reliably provide increased power and torque without lower rpm sacrifices.

The turbocharged MZR DISI engine was first introduced in the 2006-2007 Mazdaspeed6 and was later put in the 2007-2013 Mazdaspeed3. This engine has a High-Pressure Fuel Pump (HPFP) that is driven off the intake camshaft. Other MZR engines use different camshafts and don’t have a HPFP lobe to run the fuel pump. This has been a limitation in the market since the engines introduction.

Camshaft Basics

In order to understand the basics you need to know some camshaft terminology. The most common terms are lobe, lift, duration and base circle.

Base Circle – The circle on the backside of the lobe. When the base circle faces the valve the valve is closed.
Lobe – The lobe is the portion of the camshaft surface that is not the base circle. This is when the valve is opening or closing.

Lift – The distance between the base circle and the top of the lobe. This will be the amount the valve is allowed to open.
Duration – The distance, in degrees, that the camshaft is in the lift section. This controls the time that the valve will be open. This is shown in the diagram from A to B.

MZR Flow Testing

The first thing to do was flow test the head to figure out where restrictions might occur. To flow test, a constant vacuum was applied through the head and while slowly opening the valves. This is similar to what the engine is doing while running.

Intake lift

The factory intake ports do not flow much air above 0.350” of lift on the flow bench. The factory camshaft runs rough at 0.370” of lift. Shown in the graph below, minimal flow was increased between 0.350” and 0.400” on the factory head.

Intake Ports of MZR DISI Head graph — Intake Ports of MZR DISI Head

Porting is the process of modifying the intake and exhaust ports of an internal combustion engine to improve the quality and quantity of the air flow. After porting the head, there were significant increases in flow, but around 0.400” of lift there was again minimal increase in flow, with more lift. Testing suggests a proper maximum lift of 0.390” for the intake camshaft. Factory heads or ones with a large port should show gains from this increase in lift.

Why Stop at 0.390”?

More lift above 0.390” would require very extensive head work to gain much more power. Another downside of going above 0.390” lift is the valves will require stronger valve springs to maintain proper valve operation at high boost or high rpm. Upgraded valve springs should not be required for a factory head with 0.390” of lift camshafts.

Exhaust lift

A similar process to that described during the intake lift process was used on the exhaust ports and an optimal lift of 0.355” was chosen. For comparison, the factory runs 0.321” lift on the camshaft.

Limitations of Existing Options

The factory camshafts were designed around a compromise of performance and emissions; from that design criteria, there is still more power and torque available. The reader can now understand why increased lift and duration can release this power. There are limited options to increase lift and duration on the MZR DISI engine.

Reground Factory Camshafts

In order to increase lift and duration on a reground camshaft, the factory camshaft must be welded and reground to the new profile, but commonly the base circle is reduced. This allows the lift to increase and also the duration to be adjusted.

There are limitations with this approach. When reducing the base circle, many other parts in the head will have to make up for the amount ground away. It is essentially limited to the amount ground away. It is also limited by the duration because the profile must fit within the factory profile design.

In order to regrind a camshaft it must be removed from the engine or a new camshaft must be bought. A used camshaft can have wear that cannot be fixed. Buying new camshafts to send out is expensive and adds to the total cost of installing the camshafts.

Aftermarket Camshafts

The only aftermarket camshafts currently available are not designed for the MZR DISI engine. This means the intake camshaft does not have the ability to run the HPFP.

The existing camshafts for the MZR engine were also designed around naturally aspirated (non-turbocharged) engines, so the duration, lift, and overlap between the intake and exhaust camshafts are not optimal for forced induction applications.

The best option to upgrade camshafts is to buy those designed and made for the MZR DISI engine specifically.

Camshaft Design

In order to start testing camshafts on the car, a blank camshaft is needed. This requires making a mold and casting a generic camshaft from a mold. Then the bearing services were machined to factory specs and after that a few dozen durations, ramp rates, and overlaps based on the engines natural pumping ability were chosen.

Blank Camshaft with Bearing Surfaces Ground

After carefully grinding all of the blanks, it was time to dyno the engine and determine the difference in power and torque.

An engine is basically a vacuum pump with the camshaft helping determine at what rpm the pump is efficient. Camshafts allow the power under the curve to be manipulated. If you have ever taken a calculus or thermodynamics class you might have flashbacks.

Power/Torque Factory Camshaft vs CorkSport Camshaft

Potential variations in the engine tune, fuel, outside temperature, and other factors were monitored. The result is clear improvements in power and torque throughout the rpm range. The final design was chosen to limit lower rpm power decrease with a large band of power improvement over 4,500 rpm.

Exhaust Camshaft Comparison

Further examination of the exhaust lobe design is a good example of where the power comes from. When looking at the lift versus degrees as the cam spins, the changes to the lobe profile become apparent.

This change allows the camshaft to lift the valve more and longer. This allows more air to flow out of the engine.

Intake and Exhaust Relationship

The intake camshaft is electronically controlled. With additional tuning, turbo spool and power can be increased by controlling the overlap between the intake and exhaust camshafts. Overlap is the time when both intake and exhaust are open at the same time. Typically in a turbo car overlap is much smaller than in naturally aspirated cars. Below shows intake and exhaust camshafts placed over each other and the area that would be considered overlap.

Fuel Pump Lobe

Recall the intake camshaft drives the mechanical HPFP. In order to allow the end user to have the best camshaft possible and also have reliable fueling and limited wear the fuel pump lobe on the CorkSport intake camshaft is ground to match the factory camshaft lobe and then rechecked to ensure no clearance issues.

Installation:

The installation of camshafts in the Mazda MZR engine is not easy. Camshaft upgrades should be considered by an experienced enthusiast or professional installation is appropriate. To aid an experienced installer, detailed installation instructions are provided. Successful installation is supported in two different ways.

Color installation instructions
Excel Tappet guide available for download online

The CorkSport Camshafts for DISI MZR feature:

Created from brand new castings.
Break-In coating included on lobes to extend life of camshaft.
Designed exclusively for the MZR DISI engine.

Extensive testing to determine optimal camshaft design then manufactured to exact tolerance.

November 18, 2016May 28, 2024

New Product: MazdaSpeed Dual VTA Bypass Valve

Many months ago here at CorkSport we decided it was time to bring a new high performance BPV to the market. The goal was to design a BPV that was compact, durable, and performed beyond just making noise; most importantly this BPV had to feature VTA functionality that was a right balance of daily driver friendly and performance. Ladies and Gentlemen, boys and girls, I give you the new CorkSport VTA BPV.

A beautiful picture of the outside looks nice, but does not even begin to show the many features designed into this BPV. Let’s take a look inside.

mazdaspeed bypass valve cutaway idle — Figure 1: Cutaway view in idle position

Looking at the first cutaway view shown in Figure 1, you’ll immediately notice the three O-rings. Two are located on the sides of the piston and one is located at the bottom of the piston. These are important for a couple reasons: the O-rings allow the piston to actuate/slide easily when combined with a proper lubricant and provide air tight seals in all piston positions. This allows the valve to hold 50psi of pressure without leaking.

I specifically identified the VTA port because it location is critical to the BPV design and the drivability of the vehicle. In the idle position the piston sits at approximately the same position as shown above due to the vacuum pressure sourced from the intake manifold. At idle the VTA ports are closed, keeping your fuel trims in check.

Next, let’s look at the BPV in positive pressure (building boost) situation.

mazdaspeed bypass valve cutaway pressure — Figure 2: Cutaway view in positive pressure position

Immediately after applying throttle, the intake manifold begins to increase in pressure due to the turbocharger building boost. At the same time the BPV piston is forced closed as shown in Figure 2. Like the idle position, the VTA ports are closed keeping fuel trims in check. The piston also creates an airtight seal against the base flange improving boost response.

Next you shift or get off the throttle which causes a sudden pressure change in the intake manifold and the charge pipe pre-throttle body. The excessive pressure build up in the charge pipe combined with the vacuum from the intake manifold cause the piston to open as shown in Figure 3 below.

mazdaspeed bypass valve cutaway high boost — Figure 3: Cutaway view in high boost lift off position

Unlike the idle position, the piston has moved up past the VTA ports. This is due to the excessive pressure differential between the piston vacuum chamber and the charge pipe pressure. The greater this pressure differential the faster the piston will respond and vent more air to the VTA ports. Testing has shown that the VTA ports begin activating at ~15psi or greater boost pressures on a K04 Turbo equipped Mazdaspeed.

So that’s how the CorkSport VTA BPV works, but what makes it so efficient in doing so? A combination of simple and effective features all wrapped up into one design.

Response is key to a great performing BPV, plain and simple. The piston inside the BPV must respond and accelerate extremely fast in order to reduce the pressure in the charge pipe and protect the turbocharger. Attaining that response comes down to simple physics in the form of Force = Mass * Acceleration. We can directly affect the mass of the piston via design and materials, which we were able to get down to a mere 38 grams w/O-rings. We can semi-directly affect the force required to accelerate the piston which various spring rates. Therefore by reducing the weight of the piston and optimizing the force applied to the piston we were able obtain a remarkable response time.

vta bpv response — Figure 4: CorkSport VTA BPV response time during high boost throttle close situation

Looking at Figure 4, you can see two separate graphs shown. The blue graph shows the intake manifold pressure in a 0-5volt range. Boost pressure was leveling at ~23.5psi on a CorkSport turbo equipped vehicle. The red graph shows the charge pipe pressure just ahead of the throttle body approximately where the BPV is located.

During the test the car is held steady at ~6000rpm so that boost can level off for ~5sec, then the throttle is abruptly closed; this is shown in the blue graph with the sudden decay. This causes sudden vacuum in the intake manifold and increased pressure in the charge pipe pre-throttle body. The pressure delta causes the BPV piston to react and vent which is shown with the slight increase and then decay of the red graph. The response time of the BPV is time delta from the intake manifold going into vacuum and the BPV beginning to open and vent. The resulting time delta is a remarkable 50 milli-sec or 0.050sec in general terms.

The piston isn’t the only optimized part of the BPV. The piston design and the BPV cap were designed to work together. Looking at Figure 3 you can see that the hose barb fitting is integrated into the cap design and more importantly is “inside” the piston as much as possible. By reducing the volume of the vacuum/boost signal chamber in the BPV, we have reduced the total volume that must be removed from the chamber before full vacuum occurs and can begin moving the piston. You could compare this to “shot-gunning” a can of beer. The tall boy is going to take longer than your standard 12oz right? Same idea with the BPV, but we are trying to shave milli-seconds.

bpv flange adjustability — Figure 5: CorkSport BPV flange adjustability

Another awesome feature on the CorkSport VTA BPV comes in the form of installation flexibility. Not only is the BPV compact at just 2.50 inches tall, but the flange can be adjusted to a total of five positions. The center BPV in Figure 5 shows the typical position for a Mazdaspeed BPV. From there the flange can be adjusted 15 or 30 degrees clockwise or counter-clockwise to aid in installation.

Lastly, and arguably most important, the CorkSport VTA BPV flows great. Figure 6 shows a CAD flow simulation of the BPV fully open with inlet condition 23psia @ 110F and outlet condition 7 inches of H2O vacuum. Mach flow or commonly called “choke flow” is the situation when the air velocity reaches Mach 1. At this point no more airflow can be pulled through the BPV without increasing the pressure at the BPV inlet (charge pipe). In the CorkSport VTA BPV, Mach flows begins to occur at the nozzle throat shown in Figure 6. This is to be expected with the compact design and was a compromise made in the design process; however you will notice that the CAD simulation does not take into account the potential flow of the five VTA ports. These will only increase the maximum potential flow of the BPV.

To top it all off, the CorkSport VTA BPV makes an array of noises ranging from subtle whistles to loud whooshes. I invite you to check out the video found in the product listing as words just cannot give it justice.

We set out to design a high performing VTA BPV for the Mazdaspeed community that delivered with performance, style, and entertainment. We believe we delivered with a leak-proof, fast responding and glorious sound BPV. We hope you enjoy your new CorkSport VTA BPV as much as we enjoyed designing it.

-Barett