CorkSport Mazdaspeed 6 Front Mount Intercooler

The MS6 FMIC installation gives you a stealth install with minor trimming and allows you to keep the windshield washer bottle.

It’s been a long time coming but it has finally returned: the CorkSport Front Mount Intercooler Kit for Mazdaspeed 6! We’ve had many challenges on this project but we’re happy to report that it’s finally here and better than ever. We originally released this way back in 2012 (check out the release blog HERE for a throwback) but the only thing we kept from that kit was the intercooler core itself. All of the piping, silicone, and mounting has been redesigned for best fitment and minimizing trimming needed for install. Check out the images and full info below!

Superior to the factory Mazdaspeed 6 TMIC, the CorkSport FMIC gives you consistent cooling all the time without heat soak

To start things off, let’s look into the intercooler itself. It is a unique design where both the inlet and outlet point toward the driver’s side of the vehicle. This means our pipe routing is a little more complicated than most, but it makes it much easier to fit as you do not need to relocate your windshield washer bottle or deal with any of the fitment issues that come with squeezing a pipe through the passenger side of the car.

The bolt in Mazdaspeed 6 FMIC kit which makes it the best intercooler kit available.

The intercooler core is a high flowing, bar and plate design that measures 21”x10”x3”. This is good for efficient flow up to 500-550WHP yet adds minimal boost lag, even at lower power/boost levels. This big core fits snugly behind the crashbar to eliminate trimming the crashbar or your underbody shields. There is still some trimming required to fit the core and piping, however almost all of it is trimming on plastic components, with one metal cut on a thin sheet metal bracket.

Mazdaspeed 6 FMIC fits up to a 4 inch SRI

Moving onto the piping, the CS intercooler kit uses varied piping sizes for the hot and cold side intercooler pipes. The 2.25” hot side pipe ensures the charge air reaches the intercooler as fast as possible, helping reduce boost lag. The cold side uses 2.5” piping in the first half and 3” piping in the second half. Having this large volume of cool charge air directly in front of the throttle body helps with throttle response and the large diameter further helps with peak flow capacity. This piping setup has proven itself to work great on our GEN2 MS3 FMIC kit, and has been pushed to 684WHP on Barett’s GEN1 (he modified the GEN2 piping to fit his GEN1).

Wire reinforces silicone hoses make the Speed 6 FMIC a quality product

There was painstaking care taken to ensure the kit is as easy as possible to fit on your MS6. The hot pipe has a lot more freedom for intake fitments than our previous kit and we made sure all the CS intakes fit like a glove. Other aftermarket intakes have not been test fit but check out the images, they will give you a good idea if your SRI will fit or not. All the piping is mandrel bent and comes in a polished finish, so it is ready to install right out of the box and look and perform great!

Keeping everything together is the custom designed silicone couplers. You may notice that some of the silicone sections are longer than a typical silicone coupler. This is to ensure the best fitment as some shapes can simply not be made easily in a piece of pipe.

As with most CS silicone components, each coupler uses 4-plys of nylon reinforcement braiding and 5 layers of silicone. This is typically very good at resisting expansion under high levels of boost; however, we wanted to really make sure the long couplers of the MS6 kit do not expand. Any coupler longer than about 6” uses an extra layer reinforcement made of metal wire. This further resists expansion under boost, and even helps keep all the piping stable between mounting locations. While the outside of the coupler may look bumpy, the insides are still very smooth like a typical piece of silicone.

A complete FMIC for the speed6, everything you need to install is included except the tools

Each Mazdaspeed 6 intercooler kit comes with everything you need for install. Stainless steel T-bolt clamps are included for each connection to ensure secure, leak free joints. The intercooler mounting bracket, hardware, and full color install instructions are also included so you know you can get the job done right.

The MS6 FMIC installation gives you a stealth install with minor trimming and allows you to keep the windshield washer bottle.

We’re happy to finally have this out and are excited to see you all get your hands on them. Be sure to drop any questions you may have below and check out the product listing for more images!

MZR DISI Single Runner Intake Manifold Gasket

Mazdaspeed 3 Thermal Barrier Intake Manifold Gasket

The CorkSport Single Runner Intake Manifold Gasket is here! Designed for OEM and upgraded intake manifolds with or without ported cylinder heads on the DISI MZR in the Mazdaspeed 3, Mazdaspeed 6, and Mazda CX-7 Turbo, the CS IM gasket is one of those things you don’t realize you need until it’s too late. The OEM gasket often fails to seal once reused and can cause a restriction when going to enlarged ports. This can be frustrating as who wants to take their car back apart after a manifold upgrade because of a stupid gasket? If this sounds familiar, read on as we introduce you to the CS single runner gasket!

Mazdaspeed 3 Thermal Barrier Intake Manifold Gasket

We collaborated with Cometic gaskets to design the intake manifold gasket; testing multiple materials to really determine what will hold up to the abuse of a Mazdaspeed. Cometic’s Aluminum Foamette Material (AFM) in 0.060” thickness was by far the best choice. It uses an aluminum core surrounded by a synthetic nitrile rubber coating. This material seals fantastically well, even if there are some minor surface imperfections or even O-ring grooves that are present with some aftermarket intake manifolds. This material is also resistant to motor oil and fuels, plus can be reused should you need to perform valve cleaning or have to take your intake manifold off for an install.

The Mazdaspeed 3 intake manifold gasket fits with stock and most aftermarket intake manifolds found on the Speed 3 Speed 6 and Cx7

Aside from offering better sealing than an OEM gasket, the CS IM gasket offers performance benefits. When going for more power, it is very common to upgrade the port sizes on the intake manifold and/or cylinder head. Doing this and reusing an OEM gasket can leave an edge of a gasket or even the center dividers of the OEM gasket in the way of airflow. The CorkSport IM gasket eliminates this problem by using enlarged ports that will suit the most aggressive of porting with no flow restriction. Plus, we went to a single runner opening to eliminate the divider present in the OEM gasket to further prevent flow restrictions. There is also the added safety benefit, as a piece of an OEM gasket hanging in the airflow path could break off and enter the engine which would never end well. This is truly a performance gasket, meant to give you room for whatever flow you want to put through it.

The Single runner MZR intake gasket goves the best flow without the divider obstruction in the intake runner

There is also a less obvious performance benefit than flow: thermal insulation. OEM gaskets are made out of metal, which means as your engine heats up, this heat can directly transfer easily into your intake manifold. This is also an issue with O-ring sealing as the intake manifold is directly touching the cylinder head. More heat in your intake manifold means it’s harder for your boosted air temps to stay cool when traveling through your intake manifold. While not a huge benefit, colder charge air will always help you make more power. Since the CorkSport Single Runner IM Gasket has the synthetic nitrile rubber coating, heat transfer into the intake manifold is more difficult, keeping your charge air just that little bit cooler!

The Speed6 gasket allows for plenty of space for porting if you are going to the maximum on your MZR DISI engine.

The CorkSport IM gasket comes with a spacer for the lower mount of the intake manifold made of the same AFM material. This is critical as the CS gasket is six times thicker than OEM so the lower mount no longer lines up properly. Failure to use a spacer like this can cause leaks at the cylinder head flange or worst case, warping or damage to your intake manifold or cylinder head.

Mazda MPS 3 and MPS 6 performance intake manifold gasket

The CorkSport Single Runner Intake Manifold Gasket is a great upgrade to optimize your manifold upgrade or simply ensure your next maintenance day goes smoothly. Let us know if you have any questions and visit the product listing if you’d like to pick one up!

2004-2013 Mazda 3 and 2010-2013 Mazdaspeed 3 Aluminum Coolant Reservoir is back

2004-2013 Mazda 3 bolt in coolant reservoir

We’re happy to welcome another product we have resurrected from the dead: the CorkSport Aluminum Coolant Reservoir for 2004-2013 Mazda 3 and 2010-2013 Mazdaspeed 3. Back and better than ever, we have completely redesigned the tank from the ground up. We ended up with a tank that performs just like OEM yet will stand up to the test of time and look a hell of a lot better while doing it!

2004-2013 Mazda 3 bolt in coolant reservoir

As the GEN1 and GEN2 get older, the OEM plastic tanks become more and more prone to failure. The constant changes in pressure and temperature, plus the chemicals in the coolant cause the plastic to weaken over time. The aluminum used for the CS coolant tank will hold up better over time, ridding you of the hassle of a leaky coolant tank. To ensure proper functionality, the CS coolant res includes internal baffling, just like OEM. The baffling keeps air bubbles from entering the cooling system under aggressive driving conditions and ensures your cooling system will be operating as intended, regardless of how you’re driving.

A replacement for the ugly plastic coolant tank for the 2010, 2011, 2012, and 2013 Mazdaspeed 3

The CorkSport coolant reservoir is designed specifically as a replacement for the OEM Mazda tank, which means no drilling, fabrication, or other modifications. The OEM coolant hoses even work perfectly with the CS tank. To check the coolant level in the CS res, since you obviously can’t see through the aluminum, we include a sight tube on the front of the tank that easily displays how much coolant is present. As an additional upgrade from OEM, we include a 1.5bar (~22psi) radiator cap for better protection against overheating. Plus, should you want even a higher pressure cap, it uses a typical radiator cap connection, so upgrading is easy. Finally, an overflow hose is included, which can easily be adapted to fit with a catch tank, should you need one when racing at a track.

Replacement for the OEM plastic coolant tank for the 2010-2013 Speed3

We haven’t yet touched on what is possibly the best part of the CorkSport coolant reservoir: appearance! With its simple design and sleek wrinkle black powder coat finish, it is a great fit in almost any engine bay. Let’s be honest, the OEM tanks look okay at best when brand new, yet within a few months they become yellowed and ugly. The CS coolant tank is a great finishing touch for your Mazda’s engine bay. We even hid the mounting locations to provide you with the cleanest look!

2010-2013 Mazda 3 coolant tank upgrade

Each CorkSport Coolant Reservoir gets a lot of love before it heads out our doors. The tanks are first laser cut from 11 gauge aluminum and then precision formed before being TIG welded together. Each tank gets a cap, sight tube, and fittings which are all chosen specifically for the use with pressure and automotive coolant so they will hold up over the years. Finally, once assembled, we pressure test every tank to ensure no leaks for your Mazda. All of this comes with the hardware needed for install, color instructions, and CS support!

Mazda MPS3 coolant surge tank replacement

Be sure to check out the product listing for more pictures of the CS coolant reservoir. Give us a call if you want any additional info. We can’t wait to see you all get your hands on these tanks!

The CorkSport CST4 – The Best Turbo for the Mazdaspeed

How to get 400whp from your Mazdaspeed 3

Back in 2015, CorkSport announced the launch of the “CorkSport Turbo” or “CorkSport 18G” a high performance drop-in turbo upgrade for the MazdaSpeed 3, Mazdaspeed 6, and CX-7. Fast forward to 2020 this potent turbo is now called the CST4 with the introduction of the CorkSport CST5 and CST6 Turbochargers.

The CST4 has found home in thousands of community members Mazdaspeeds since launch and continues to be a highly sot after upgrade today…a testament to the CST4’s performance and durability. Starting from scratch, the CST4 is a 100% brand new performance unit.  No core, no revised K04 parts…this is a performance turbocharger from the ground up.  

A bolt on 400whp Mazdaspeed 3 bolt in turbo

Let’s recap on what makes the CST4 such a great fit for the MazdaSpeed.  A proven MHI journal bearing center section, these offer great cooling capabilities and fantastic reliability, especially when combined with our high performance journal bearings and 360° high performance thrust bearing. The CST4 can seriously take a beating, and does it in a package that fits perfect in the OEM location.

Mazdaspeed 3 Mitsubishi 18G CHRA

Attached to this center section is a compressor and turbine wheel combo that is a little unconventional. Creating boost is a custom MHI 18Gbillet compressor wheel that is rated at 50lb/min while the turbine that drives the CST4 is a MHI TD05H 9 blade design. Compared to a traditional 12 blade turbine wheel, the CorkSport design is lighter weight for faster spool times and less blades for higher maximum flow capacity.

Speed3 turbocharger high flow exhaust wheel

The wheels are wrapped in new housings. On the compressor side there is an OEM diameter inlet to simplify the installing with any intake system you had setup with your K04. The turbine housing maintains the stock flange design for easy fitment with any exhaust manifold and downpipe that bolted to the K04. 

The best mazdaspeed 3 turbo upgrade internal or external wastegate, better than the BNR S3.

So what’s the hype now?  Great question!  The community has pushed this turbo to the limits and has asked for more…with the development of the 500whp CST5 and 600whp CST6 we found that an EWG turbine housing can be very beneficial to boost control.  That development bleed over to the CST4 in the form of a EWG turbine housing for increase boost control and an increase in A/R size. 

Mazdaspeed 3 turbo upgrade dyno sheet

Like the CST5, you can now choose your boost control.  Internal wastegate for a stealth and simple install or go for the EWG turbine housing for extra noise and a little more top end power potential.  The choice is now yours. 

Mazdaspeed 3 EWG bolt on turbo kit

Now what does all of this tech mean for you and your car? If you have a stock block you can easily max out power (~380WHP depending on fuel and bolt-ons) and keep some of the K04 spool you love.  With professional tuning you can keep a safe tune that hits hard and carries power.

The wheel and housing options delivers great response as well as great power. When pushed to its limits on a built block, 20psi was hit at 3300-3400RPM with peak boost around 27-28psi carried to 7000rpm. Obviously this isn’t stable for a stock block but is possible on fully built cars with full bolt-ons and a high flowing head.

Mazdaspeed 3 Turbocharger installation hardware

Both the IWG and EWG options come with a full hardware kit that includes everything you need for install. This means all coolant/oil lines, new gaskets, new crush washers, and even new studs and crimp nuts for both the turbine and downpipe flanges. The EWG setup includes a custom designed elbow for great EWG actuator fitment on MS3 and MS6, and the correct clamp to attach it to the housing. More info to come later on an add-on screamer pipe option.

Bolt on Mazdaspeed 3 EWG dump tube kit

Each CST4 also comes with full CorkSport support, including full color install instructions, a 1-year warranty, and assistance with any questions you may have. We are extremely excited for you all to get your hands on the CST4 and start taking your FBO Mazdaspeed to the next level.  Check out the product listing for full details and to place to order.

Need More information? Check out our video below

Guess Who’s Back

We are proud to announce a old product that we have redesigned.  Introducing the V2 CorkSport Coilovers for 2004-2013 Mazda 3 and Mazdaspeed 3.  

We’ve taken the same basic designed and revised and refined it with small changes to fitment and big changes to spring rates and damping rates.

Complete Mazdaspeed 3 Coilover Suspension

For spring rates we took an approach that seems to differ with most street oriented kits on the market today.  We wanted to develop coilovers that were both enjoyable to drive on the street in a daily driven car, but could also perform on the track in more performance oriented settings.   With these goals we focus on the ride feedback, understeer/oversteer balance, and suspension frequency balance.  

The result; linear rate 7K front springs and 8.5K rear springs. This provided us with a ride quality that was comfortable, but sport focused and with the right balance of understeer vs oversteer, with a car that is more oversteer biased.  The frequency of the suspension was also taken into consideration with a higher rear frequency than front to improve driver feedback and comfort. 

Mazda 3 coilover suspension

Like most coilovers, ride height adjustability is essential to setting up you Mazdaspeed 3 or Mazda 3 for your goals.  The redesigned CS coilovers offer 2 inches of height adjustability from approximately 0.75 inches to 2.75 inches lower than stock springs.  This range of ride height allows you to have a conservative track-oriented setup or a slammed show setup depending on your goals. 

With ride height, you can also adjust the front camber setup with the CS Coilovers include front camber plate, this kit comes to your door ready to install.  

Street Performance 1st Gen Speed3 Coilovers

Lastly, and also somewhat unique to CS, is the design of the front coilovers.  Instead of a more conventional and cost effective design, we’ve utilized an inverted damper design for improve performance.  By inverting the front damper/shock, we’ve both reduce the unsprung weight of the front suspension and increased the rigidity.  Both of these result in increased driver feedback and improved performance.  

2nd Gen Mazdaspeed 3 Suspension

If you been considering lowering springs or coilovers for you Mazda 3 or Mazdaspeed 3 then give CS a good look. Thanks for taking the time to checkout CS, stay connected on the blog, newsletter and social media channels for upcoming performance parts for your Mazda.  

-Barett @ CS