Skyactiv 2.5T Intake Heat Shield

OEM Look and solid performance power gains for the Mazda 6 Turbo

We’re back with another product for SkyActiv 2.5T owners that a lot of you have requested after getting your CorkSport SRI. Introducing the CorkSport Heat Shield for 2018+ Mazda 6 Turbo, 2019+ Mazda CX-5 Turbo, and 2016+ Mazda CX-9! Cool down your intake air temps in two ways: by blocking heat from the engine bay and by using the OEM ducting to draw in fresh air. This allows your turbo system to breathe just a bit easier, especially during hot days or if you’re stuck sitting in traffic. Plus, it makes the CS SRI look like a factory option performance part!

Read on for full details and be sure to give us a call if you have any questions!

Isolates heat from the Mazda 6 turbo SRI

We really focused on keeping cool air around the filter with the CorkSport SkyActiv 2.5T heat shield. The shield was carefully designed to seal the intake off from as much engine bay heat as possible. This meant a complicated 2 piece design that is riveted together. We also designed the shield to work with the OEM air ducting. This directs cool outside air to the filter, further reducing intake air temps. The shield is also left open to the area in front of the tire, underneath the headlight. We found that this area gets some fresh air during driving as well, further keeping air temps down.

Cx9 Turbo cold air intake heat shield
CorkSport Heatshield

Now what benefits does cooler air offer? The basic generalization is that since cooler air is denser than warmer air, your engine can ingest more air per cycle, and make more power. When a car is turbocharged though, this gets a little more complicated as you have a turbo that compresses and heats up your intake air and then an intercooler that cools down the boosted air before even getting to the engine. What that means is that the “colder air will make more power” generalization may not hold true, especially with how advanced modern turbocharged vehicles have become. What colder intake air does offer you is a less stress on your turbo system. Colder air means your turbo does not have to work as hard to flow the same amount of air at the same boost pressure. In addition, colder intake air can translate to slightly cooler air exiting your turbo and heading to your intercooler, taking some stress off the intercooler as well.

Cx5 Skyactiv 2.5T Performance airbox
See the video

Enough theory, let’s talk results! In both daily driving testing and in torture testing on the dyno, we found decreased intake air temps with the CorkSport Heat Shield installed. When cruising or when it’s cold outside, we were actually surprised at the low intake temps of the CS SRI alone—there’s actually a surprising amount of fresh air that gets into the engine bay. Where the heat shield really comes into its own is when sitting stationary or driving on a very hot day. That’s when we saw our biggest improvements in intake air temp.

While we did not see any notable changes to horsepower, our torture testing on the dyno really shows what a worst case scenario would look like for intake temps. Check out the graph below that compares the CS SRI alone vs. the CS SRI and heat shield combo. This is a little exaggerated due to decreased airflow on the dyno but is similar to what your engine could see when sitting in traffic on a hot day, then accelerating back up to speed.

Performance Skyactiv 2.5T air temp data
CorkSport

The CorkSport Heat Shield is made from laser cut and precision formed carbon steel. We chose carbon steel for great strength and lower heat transfer than aluminum. For corrosion resistance, the heat shield is finished off with wrinkle black powdercoating. This coating also gives the heatshield a great look that helps it blend in with the rest of the engine bay and make the intake system look like a factory performance part! The two sections of the shield are attached together using stainless steel rivets for a great look and long lasting strength. Lastly we include rubber edge seal to keep as much heat out as possible, and to prevent any vibration or unwanted noise.

Mazda Cx5 Turbo Short Ram Intake OEM Look
CS Heatshield

If you’re looking for the next mod your Sky 2.5T or have been holding off on the CS SRI until there was some heat protection, check out the new CorkSport Heat Shield. We are even offering a package deal! If you purchase the heatshield and SRI together you will save $20.

For early adopters of the CS SRI, we have not forgotten about you! We are also offering the same $20 discount on the heatshield for a short time. When placing your order, enter coupon code heatshield20, and in the customer notes, enter your original SRI order number. BAM – $20 Savings!

Finally, we’ve got some new silicone colors coming for the CS SRI! They aren’t quite here yet but if you’re looking to add a splash of color in your engine bay, wait just a bit longer! That’s all for now, be sure to check out the product listing for more images of the heat shield and give us a call if you have questions!


Performance Parts for the SkyActiv-G Turbo 2.5L

About a year and a half ago we launched our first performance part for the highly anticipated turbocharger 2.5L SkyActiv-G; the Short Ram Intake. This being the first factory turbocharged engine in a Mazda since the long-missed Mazdaspeed 3 in 2013. We were eager to start developing new and exciting products for the Turbo SkyActiv…and trust me that passion has not slowed down.

Today we are going to give you a sneak peek of what’s to come for the Sky Turbo 2.5L through 2020.

2018+ Mazda 6 Turbo 2.5L – Sport Lowering Springs

First up is not necessarily a new product for your Mazda 6, but is an iteration in response to the feedback we’ve received. The current CorkSport Sport Lowering Springs for the 2018+ Mazda 6 (shown above) are sporty, comfortable, and provide a balanced drop of 1.0” Front and 0.75” Rear. While many have praised the springs in their current iteration, some have asked for a more aggressive feel and stance.

We’ve heard you and we are taking action. We are currently developing more aggressive sport springs that will drop the ride height further and bump up the springs rates a bit; we are calling these the “LowLow” springs. Since we are still in development we have not finalized the ride heights and springs rates, but we have a target drop of approximately 1.5” Front and 1.65” Rear.

2018+ Mazda 6 Turbo 2.5L Short Ram Intake

Next up is a new product and one that many of you are asking for. While the Short Ram Intake does increase performance and looks great riding solo in the engine bay, we’ve decided to develop a heat shield kit to further compliment the SRI. We are in the final testing and validation stages, seeing great results with cooler intake air temperatures.

We will be launching the heat shield kit as a solo option so you can upgrade your current SRI system and in a bundle deal if you are looking for a complete kit for your Turbocharged Mazda 6, CX-5 or CX-9.

CorkSport

Next up is a completely new option for the SkyActiv turbo platform…high-performance turbo inlet pipe. This is the first turbo inlet pipe option and is designed to install with the OEM battery, but why is this important or exciting? Just like the Short Ram Intake, improvements inflow in and out of the engine increase efficiency and thus overall power potential.

Turbo inlet pipes are a common upgrade for the Mazdaspeed platform as performance requirements increase. While most of those turbo inlet pipes are manufactured from aluminum pipe or silicone, the SkyActiv-G Turbo Inlet Pipe will be manufactured from cast aluminum. This allowed us to maximize space with a unique shape and still maintain OEM like fitment. Stay tuned for more info on this project.

Did you notice that there is a blue and red silicone coupler on the intake system? In the very near future, we will be providing silicone color options for the Short Ram Intake: Black, Red, Blue so you can choose a style that fits your car best.

CorkSport

Lastly is the other side of the engine. To complement the CorkSport 80mm Cat-Back Exhaust, we are developing a High-Performance Downpipe in two setups. Race Only Non-Catted and Street Catted setups.

A first for CorkSport, we are designing the downpipe in a “modular” design that will drastically reduce the difficulty in installation and improve durability. The upper section directly bolted to the turbocharger is a cast 304 stainless steel with included heat shield and the lower section is thick-walled 80mm stainless steel piping. They connect via a v-band clamp for a simple install process vs wrestling the entire downpipe into the car and onto the turbo.

Wow, that was a lot, and trust me there is more we are investigating, but we can’t let ALL the secrets out yet. We would love to know what products you would like CorkSport to develop for the 2018+ Mazda 6 SkyActiv Turbo platform, you can do so right here by Submitting a Product Idea.

Thanks for tuning in with CorkSport. We hope you are as excited about the 4th Gen SkyActiv Turbo platform as we are!

-Barett @ CS

2018+ Mazda6 Performance Exhaust for the 2018-up 2.5T

Mazda did a great job bringing a turbocharged engine back to the Mazda 6 (Mazda 3 next please?), but may have done too good of a job of keeping it quiet. Say hello to the CorkSport 80mm Cat Back Exhaust and Axle Back Exhaust for 2018+ Mazda6 equipped with the turbocharged 2.5L engine. If you’re interested in waking up your SkyActiv-T in both excitement and power, read on as we breakdown the newest CS exhaust.

As with all CorkSport exhausts, the goal of the MZ6 2.5T exhaust is to improve power and sound by improving the flow of the OEM exhaust. We started by increasing the size of the piping from 60mm to 80mm. That is an increase of over three-quarters of an inch to really help your turbocharger breathe better. In addition, the CS exhaust system eliminates the crushed areas present in the OEM exhaust and replaces the restrictive muffler sections with pass-through resonators. These resonators control volume and drone without affecting power output.

All that extra flow does mean a power increase. In our in-house dyno testing, we saw an increase in 5-6WHP just by bolting on the CorkSport  Cat Back Exhaust. Check out the dyno sheet down below to see. This increase came with no tuning changes, no check engine lights, and the only other mod being the CorkSport Short Ram Intake, which was installed for both tests. With the 80mm piping size, this exhaust is ready to support future modifications and would likely show more power gains with proper tuning.

The CorkSport MZ6T exhaust is more than just function. We went through multiple iterations and designs to ensure the best sounding exhaust for your 6. The finished product ups the volume without being annoying to daily drive yet still sounds great when in hard acceleration. We strongly recommend you watch the video below to hear what to expect from this exhaust.

If you feel the video below gives you too much volume for the daily, then check out the Axle Back Only Exhaust.  Recently added to the CorkSport line-up, the Axle Back alone adds a mellower, but still noticeable tone to the exhaust.  This is a great middle ground between the CorkSport Cat Back and the stock exhaust.

To give a great looking, long-lasting finish to each exhaust, they are manufactured from fully polished 304 stainless steel. To ensure a high quality fitment, all components are precision TIG welded together on jigs made from OEM exhaust components. Lastly as a finishing touch, we use 100mm dual wall exhaust tips. They fill out the bumper cutouts and are extended slightly to give a classy look and enhance the new Mazda 6’s styling.

The CS Mazda 6 Turbo Exhaust comes with all the hardware and gaskets you need for installation, high quality instructions, and CorkSport support for any questions you may have. Pick up a CorkSport MZ6 2.5T Exhaust today and liven up that daily commute.

2018+ Mazda 6 Turbo Lowering Springs

2018 Mazda 6 on CorkSport Lowering Springs

We at CorkSport are happy to introduce the Sport Lowering Springs for 2018+ Mazda 6 equipped with the 2.5L turbocharged engine. We took a fresh approach to spring design to offer you the best combination of style, ride quality, and handling in a package that fits just like OEM. The new Mazda 6 looks great, but a functional drop gives it just what it needs to look even better. Combine this with the new handling characteristics and your MZ6 2.5T transforms from a fun grocery getter to something you can actually enjoy on backroads.

Mazda 6 2.5T CorkSport Lowering Springs
2018+ Mazda 6 2.5T CorkSport Lowering Springs

Ride Height

Let’s start off with the big one: ride height changes. These springs offer a conservative drop from the stock springs with about 1 inch lower in the front and about 0.75 inches lower in the rear. We chose this height as it offers a great new look without sacrificing any of the daily drivability of the Mazda6. This height clears the typical driveway with no issues, and retains plenty of suspension travel, even when fully loaded with 5 adults and weight in the trunk. Check out the image below for a direct comparison to a fully stock MZ6.

Lowered 2018 Mazda 6 vs. Stock Mazda 6
Black: Stock Springs Red: CorkSport Lowering Springs

Handling

The height drop will be noticed when you’re outside the car, but the handling improvements will be apparent when driving. By lowering the center of gravity and stiffening the springs, body roll is reduced in corners, giving you extra confidence when attacking that backroad. In addition, we stiffened the rear springs more than the fronts, reducing understeer. By number, this meant 3.8K front springs (25% stiffer than OEM) and 7.3K rear springs (45% stiffer than OEM). Derrick, our resident racecar driver and MZ6T owner, loves the new setup.

2018 Mazda 6 on CorkSport Springs

While this may sound like a big jump, they ride similarly to the OEM springs. We used a natural frequency analysis to ensure we achieved comfortable characteristics over bumps. Read the last half of this blog for more info on what that means (it’s complicated but awesome). Part of the great ride is the OEM dampers (shocks and struts). The spring rates we chose fit well with the stock shocks and struts to prevent any bounciness, plus, the conservative drop ensures you are in the normal operating range of the dampers. This means no prematurely worn shocks/struts due to springs that are too low.

Lowered MZ6T

Material Quality

Last but not least, the CS Sport Lowering Springs are made from high tensile strength spring steel and come powder coated in an OEM style black for long-lasting quality and corrosion resistance. They install just like stock, reusing all your OEM components. The only permanent modification is trimming the bump stops to match OEM suspension travel.

Be sure to check out the product listing for more images, a product video with more comparisons to OEM, and pricing. Make your new Mazda 6 yours with just the right styling and handling boost from CorkSport.


That about does it for the Mazda 6 2.5T Sport Lowering Springs. Be sure to let us know if you have any questions-suspension is hard, even for us! Lastly, be sure to share your MZ6T with us by using #CorkSport.

-Daniel @ CorkSport

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Mazda 6 Turbo and CX-9 Short Ram Intake

That’s right, it’s time to start making more power on the SkyActiv 2.5T. We are proud to introduce the CorkSport Power Series Short Ram Intake for 2018+ Mazda 6 equipped with the 2.5 Turbo Engine and 2016+ Mazda CX-9 . We replaced the restrictive factory airbox with a free-flowing intake system that was designed to help your turbo breathe significantly better. The SRI offers better performance, sound, and looks in an easy to install package. Read on for full details, and be sure not to miss the sound clips in the video below!

This CorkSport Short Ram Intake was designed specifically to get the best the 2018+ Mazda 6 2.5T and 2016+ Mazda CX9 has to offer. From the precision machined MAF housing to the high flowing filter, each component in the CS system offers an improvement over the stock counterpart while retaining great fit and finish. All mounting hardware, brackets, and clamps are included to make your install quick and painless.

Starting at the OEM turbo inlet pipe, the factory airbox utilizes a ribbed and flexible rubber elbow. While working well enough, the ribs induce significant turbulence into the intake tract. The CorkSport intake replaces this elbow with a smooth flowing silicone elbow. In addition, the silicone is 4-ply reinforced with nylon to eliminate any chance for volume reduction under wide open throttle.

Next comes the MAF sensor housing. The MAF sensor essentially reads the volume air that is entering the engine so the ECU can adjust tuning to suit. Since the OEM unit does a good job here, it was imperative that the CS MAF housing matches to ensure no check engine lights or tuning issues. The CorkSport MAF housing is precision machined from 6061-T6 billet aluminum to match the OEM housing to ensure no CELs, no tuning issues, and great flow.

Finally, the CS SRI uses a performance AEM dry-flow filter. A high-quality filter like this is long-lasting, reliable, and can be washed and reused. It has superior filtration to the OEM filter, while also allowing more airflow into the intake tract.

Now for what you’re all really interested in: power gains. By removing the restrictive OEM airbox and turbulent intake elbow, we were able to pick up 8-12WHP from ~4000RPM out to redline. This power bump comes with no tuning changes and with identical testing conditions. Check out the dyno graph below to see for yourself! Note: the variance in low RPM (2800 and lower) is due to difficulties associated with dyno testing an automatic vehicle.

Freeing up a few extra ponies is great but what you will really notice is the added engine and turbocharger noise. That restrictive airbox does a little bit too good of a job at dampening out all the fun sounds that come with a turbo. We were honestly a little surprised by the flutters, whooshes, and psshh noises that come with the CorkSport SRI. You also gain a little extra engine induction noise under hard acceleration. The extra noise is enough to be fun when you want it but not annoying or distracting when you don’t. Watch the video below to see what it sounds like.

As with most CorkSport products, this SRI kit comes with all the clamps, hardware, and even a support bracket for the MAF housing to ensure you have an easy and quick install.

The CorkSport SRI for 2018+ MZ6 2.5T & 2016+ CX-9is a great modification whether it’s your first or the just the latest on a long list of builds. It provides a noticeable power gain, adds some extra fun to your ride, and will support future mods down the road. Pick up yours today!

Be sure to contact us with any questions you may have, we will be happy to help!