The CorkSport Night Ride Sweepstakes

You’ve heard about our Night Ride Sweepstakes, right?

Upload one little photo of your Mazda at night, and you’ll be entered to win our LED light kit for the 2010-2013 Mazdaspeed 3 and Mazda 3?

LED Light Kit Mazdaspeed 3

We thought so, because we’ve seen almost 150 of your rides at night, most of them in the first 24 hours of the sweepstakes. We’re thrilled, because we love seeing Mazdas lit up on the road after dark — and we know you like taking night pics, because we’ve been seeing them tagged with #CorkSport for years.

Well, now’s the time to take advantage of all that photography, and enter your night ride to win if you haven’t yet! The winner’s chosen at random, so you’ll have as good a chance as anyone if you enter today.

Just remember to hurry up. We’re picking a winner from one of these gorgeous entries on Monday, October 19:

Night Ride Sweepstakes

And hey: Don’t worry about those votes. If you missed the rules and didn’t catch that random part, they won’t affect your chances of winning, just of being featured at the tip top of the contest page.




Limited Slip Blog Reminds Us: The Gen 2 MS3 Is Incredible

As we eagerly await more news about the 2017 Mazdaspeed 3, it’s easy to become distracted by a wish list of features, making us forget about the Gen 1 and 2 marvels sitting in our garages.

We’ve hoped there would be a new Mazdaspeed 3 sooner than now, but the compensation of waiting is owning and driving Gen 2 (or Genjuan) Mazdaspeeds every day. Sure, we’re a little biased, but there’s a reason our lives are centered around Mazda performance enhancement. Maybe we’re just feeling nostalgic because it’s #ThrowbackThursday, but whatever the case, the Limited Slip Blog’s 2013 review of the last Mazdaspeed 3 reminds us: Even a few years old, these cars remain incredible.

Christopher Little takes a mean shot of the MS3.

We stumbled across this blog entry after finding that killer shot above, taken by cofounder Christopher Little. If it wasn’t clear from the entries that cover just about every car under the sun, it’s obvious just glancing at their photography that these guys have a passion for vehicles, something any self-respecting Mazdahead shares.

Gen 2 Mazdaspeed 3 from Limited Slip Blog

Chris had some issues with the interior—but noted the Gen 2 Mazdaspeed 3 had the best visibility of any hot hatch he’d driven. His description of the first time he actually drove the car probably sounds like what a lot of us experienced when we first got behind the wheel of a ‘speed. The word “intoxicating” stands out, which shouldn’t surprise anyone who understands Mazda power. The Mazdaspeed 3 makes it just about impossible to drive without experiencing some raw joy, which Chris did. We get it; that’s why we devote our lives to Mazda performance, to bring even more power out of these beauties.

The Mazdaspeed 3 has always been a stunning and, yeah, intoxicating ride. It’s been great for almost a decade, and with the new generation coming out soon, we don’t expect that legacy to change.

Check out more of Limited Slip Blog’s awesome reviews and news, and follow them on Facebook, Twitter, or Instagram.





The CorkSport Mazdaspeed Exhaust Manifold Heat Shield

We’ve got something your Mazdaspeed engine bay has been needing for a long time: Our new exhaust manifold heat shield—or as some folks like to call it: The Pimp Shield.

The CorkSport Mazdaspeed Manifold Exhaust Heat Shield

A new heat shield, you ask? Isn’t that just aesthetic?

Sure, you could stick with the OEM shield, but ours is manufactured from 5052 aluminum and ceramic coated, made to be durable and guaranteed to clean up the look of your engine bay.

Your current OEM shield sticks out like a ratty POS. Pop your hood and imagine this instead. The difference is clear:

The Mazdaspeed Manifold Exhaust Heat Shield installed

Our Mazdaspeed exhaust manifold heat shield was CAD designed specifically for the MZR DISI engine, so it’ll fit over the stock manifold like a glove. Whether you drive a 2007–2013 Mazdaspeed 3 or a 2006–2007 Mazdaspeed 6, you need to order this for your bay today.

See more specs and photos and order here.





We Need Your Feedback on Our Mazdaspeed Intake Manifold

Guys, we want your feedback on a project we’ve been working on for the past year.

We’ve shown glimpses of our Mazdaspeed manifold from time to time, including the one below when we had it installed on Barett’s Mazdaspeed 3, which popped up on our Facebook page—on April Fool’s—while it was being tested.

Mazdaspeed Intake Manifold

This manifold is designed to be a bolt-in. It’ll work with the stock throttle body, stock intercooler, stock you-name-it. This means if you’ve upgraded to a front mount intercooler, it’ll also work as it keeps the OEM throttle body location.

We’ve been through a few iterations of the manifold, and below is a picture of the latest version. We’ve changed several things in the design from the last test version, including individual ports for the runners to install meth injection.

CorkSport Mazdaspeed Intake Manifold

In our testing, we’ve found spool to be 200 rpm sooner with the manifold installed. This has been shown on a 1st gen Mazdaspeed 3 equipped with the CorkSport turbocharger and a 2nd gen Mazdaspeed 3 with a GT35r installed.

We also had a peak increase in power of 17 horsepower at the wheels on the 1st gen Mazdaspeed 3 in back to back testing with the manifold.

So. This is where you the Mazdaspeed owner comes into play. We want to know: Would you buy this if we made it? The price for the intake manifold would be $725. Tell us your thoughts, and if you are interested, shoot us an email so we can keep you updated.




The New CorkSport Mazdaspeed Aluminum Pulley Set

Make your engine bay pop with our 2007-2013 Mazdaspeed 3 Aluminum Pulley Set!

Mazdaspeed Corksport Pulley Set

This sleek blue pulley set will catch your eye every time you pop the hood of your Mazdaspeed, giving your bay a nice personal touch of 6061-T6 aluminum and anodized CorkSport blue.

Installed Mazdaspeed aluminum pulley set

They come preinstalled with new OEM replacement bearings for quick installation—and they weigh 15% less than the OEM steel pulleys, so you’ll drop some weight when you add this mod. Oh yeah, and they’re precision CNC machined too, so they’ll look and perform great for years on the track and the road.

To learn more and buy your new Mazdaspeed 3 pulley set today, visit the product page, and watch the video below.

Pssst: 2006–2007 Mazdaspeed 6 owners, you can rejoice too. These blue beauties will fit your Mazda as well.



Our White Paper for the Mazdaspeed Replacement Turbocharger

We’ve been gearing up for months for the release of our turbocharger for the Gen 1 and Gen 2 Mazdaspeed 3 and 2006-2007 Mazdaspeed 6, and on Wednesday the wait was over.

CorkSport Mazdaspeed 3 Replacement Turbocharger

After countless hours designing, testing, and adjusting, we released our drop-in turbo for the Mazdaspeed, and we’re very proud of it—and thrilled about the responses we’ve already received from our beta testers. (See the first reviews on the listing.)

Beta testers for the new Mazda turbocharger

Obviously, with a product this big, we wanted to inform our CorkSport customers as much as possible about the advantages of our turbo vs. the OEM and competitors, and how much power buyers could expect to gain.

Barett wrote a huge white paper on the turbocharger, detailing all of this. From the benefit of a drop-in (no new coolant lines, oil lines, or a intake system are required to install and operate it) to the details of a turbocharger’s anatomy, you can read all about what makes our turbo stand apart.

Our goal was to create a performance-driven turbocharger that wouldn’t break your bank or require a mechanical engineering degree to install. We’re happy to say we succeeded, but see for yourself.

Order your Mazdaspeed turbocharger here today, though be sure to read Barett’s white paper first. It’s long but good.



The New CorkSport 2010-2013 Mazdaspeed 3 Radiator Panel

Who said engine bays don’t need to be customized?

Introducing the CorkSport Core Support Cover for 2010-2013 Mazdaspeed 3! This new radiator panel can clean up your engine bay, and make it pop, with just a 30-minute installation.

New Mazdaspeed 3 Radiator Panel

Guaranteed to be a perfect fit, this radiator panel was designed using a 3D coordinate measuring arm and CAD modeling software. The 3D arm is used to gather the exact measurements of the vehicle and then inputs those measurements directly into our CAD modeling software. From there, we designed a prototype and began the iterative test and fit process.

Designing the Mazdaspeed 3 Radiator Panel

Each piece is CNC laser cut from a 5052 aluminum sheet and powder-coated with a durable textured finish. This finish is resistant to scratching, chipping, color fade, and has a satin look to it, which can make your whole engine bay as stunning as the rest of your Mazdaspeed 3.

And did we mention the best part? It only takes a few minutes to install, adding an extra level of detail that every Mazda head deserves. Our radiator panel is currently available in ruby red and charcoal black, and it’s only $89.99, so order yours today, here.

-Derrick, CS

The New CorkSport Mazdaspeed 3 Hood Scoop

Look good and drive better with the latest version of our 2010-2013 Mazdaspeed 3 Hood Scoop!

CorkSport Carbon HoodScoop Installed

Would you look at that beauty?

The CorkSport Hood Scoop has a mirror-like finish, giving your Mazdaspeed 3 a clean, styled look that’s as practical as it is fresh. With a 52% larger opening than the OEM hood scoop, you’ll increase the cold air inflow to your top mount intercooler. Boost air temperatures will drop, which means more power to the engine. You’re going to turn heads, and feel a difference in performance.

Increase Mazdaspeed 3 Cold Air Intake

We engineered this to an exact fit, meaning, if you follow the instructions, installation shouldn’t take you more than half an hour. Oh, and the fiberglass is overlaid with real carbon fiber cloth and sealed with UV-resistant, epoxy resin—so it won’t lose its shine anytime soon.

UV-resistant carbon fiber hood scoop for the Mazdaspeed 3

Convinced yet? Yeah, we thought so. Check out the 2010-2013 Mazdaspeed 3 Hood Scoop product listing page for a few more nitty-gritty details, and order yours today!

The New CorkSport Mazdaspeed Electronic Boost Control Solenoid (EBCS)

Fighting boost spikes with the K04 or maybe boost creep with an internally gated GT3076R? Or have you gone all out with an externally gated setup? Whatever the reason, you have probably realized that the OEM boost control solenoid is not up to par and desperately needs something that is reliable and tunable.

Introducing, the CorkSport Mazdaspeed Electronic Boost Control Solenoid (EBCS), the fastest responding, highest flowing, plug-and-play EBCS available today for the Mazdaspeed platform.

Electronic Boost Control Solenoid

The CorkSport EBCS utilizes the latest technology in solenoid-controlled air valves, as well as using a light weight, low friction, and balanced valve design. The CorkSport EBCS will handle pressures from vacuum to 120psi with an operating frequency of 0 – 1000Hz and response time of 700µs.

So what does this actually mean to you?

You can build boost faster, reduce or eliminate boost spikes, and hold boost more accurately throughout the RPM range. Don’t believe me? Then check out the graph below comparing the OEM EBCS to the CorkSport EBCS both in bleed setup.

Boost Difference in the CorkSport EBCS

You can see a noticeable difference between the two graphs. Boost rises sooner, and there is no overshoot with the CorkSport EBCS. With the same Stage 2 tune, only changing the EBCS and adjusting the waste gate duty cycles, we saw an increase of 18 ft-lb of torque at peak due to the more boost at a lower RPM.

Fit of the CorkSport EBCS

Not only does the CorkSport EBCS work great, but it also fits great! Designed with ease of installation in mind, the EBCS can be located in the OEM location, or on the valve cover for turbochargers without the OEM tab. This goes for both TMIC and FMIC setups. There is also no wire cutting or soldering needed! Simply plug the electrical connector into the wiring harness and you are ready to go!

Whether you are just stepping into the Mazdaspeed world or are the horsepower king at the local dyno, there is a place under your hood for the CorkSport EBCS. This will benefit you from K04 to an externally gated GT3582R, and there are two ways to look at the CorkSport EBCS. First, it’s a potential power adder due to its far superior response time, efficiency, and accuracy; or second, it’s a safety device for the exact same reasons. Now there is one catch…correct use of the CorkSport EBCS will require adjustments of the waste gate duty cycles. We recommend you contact a professional tuner to setup your new CorkSport EBCS.

Reasons to Buy the EBCS

Take control of your boost with the CorkSport Mazdaspeed Electronic Boost Control Solenoid! For more technical information check out our white paper write-up of the EBCS.

-Barett, CS Engineering

Why You Need Injector Seals for your Mazdaspeed, Part 2

This post is part 2 of a 2-part series on the importance of injector seals. If you’re just now discovering this post, be sure to tune in to part 1 before continuing here.


Like the title says, you need injector seals for your MZR! Here’s why.

When Mazda designs a part, they design it with the “typical” customer and OEM power in mind – not the power hungry, boost craving driver.  Yeah, I’m talking about you and you know it – and we have just the thing to keep you and your MZR in check.  As you add more fuel and more boost, the weakest link is eventually going to give. That link is the OEM injector seals.

Three Reasons You Need Injector Seals For Your Mazdaspeed

  1. Reliability is sacrificed using the OEM seals.
  2. Leaking seals causes loss of power.
  3. Inconsistent performance is caused by leaks.

So, if you are just tuning in to our blog, then shame on you, go read part one like everyone else! With that, let’s dive into the design of the seal and how it works.

We put 500 hard miles on the Speed3 and here are the results.  500 miles may not sound like a lot, but the company owned MS3 does not live the normal life. It spends most of its time on the dyno testing new products pull after pull, may have hit 35psi, and when it does hit the streets, it’s driven by an employee searching for the governor speed.  I think we can all agree that the 500 miles was a fair amount of abuse to put the injector seals. Plus, other sets of seals have been running in alpha testers vehicles for thousands of miles without issue.

Now that we have that covered, let’s talk a bit more about the design of the seal and how it works.


It’s no longer just a washer with one sealing surface – it’s a cup. So it seals in the OEM location AND along the side of the cup. The secret is in the design (which is all thanks to @Tokay444 from MazdaSpeedForums).  The lip at the bottom of the cup is flared just a bit so that it crushes down tight against the cylinder head, and as it crushes down it also crushes outward, pushing against the wall of the port much like an O-ring. If you are having trouble visualizing the flared lip crushing outward then check out the image below. Time to get technical!


Looking at this side view of the seal, you can clearly see that the flared lip is extended further outward than the side of the seal. (Please note that in this FEA, or Finite Element Analysis, the deformation scale factor is 6.5:1, i.e. highly exaggerated). This design is what separates the CorkSport seal from any other seals on the market today. In the FEA the seal is subjected to 3300lbf in the direction of the arrows; 3300lbf is the approximate clamping force of an M8x1.25 torqued to 18ft-lb. The areas in red indicate a displacement of 0.0057 inches, which is just enough to begin yielding (permanently bending) the beryllium copper material. After the 500 miles of use, we had the four seals precision measured using a CMM (Coordinate Measuring Machine). On average, the seals yielded 0.0015 inches confirming our FEA.

Still following?

So what does this mean to you? When you torque down the fuel injector bolt and clamp you are applying approximately 3300lbf to the injector seal. This crushes the seal downward pushing the flared lip outward into the wall for ultimate sealing strength; and we have all the data to prove it! The CorkSport seal works flawlessly, but because of the design they are not reusable like any other crush seal.

So, now that we are done with all the technical stuff let’s take a look at the used seals. First, I would like to remind you what the injector looked like with the OEM crush washer and only 4000 miles.


Extremely dirty with an excessive amount of combustion gases blowing by the OEM injector seal. This makes for a very unhappy MZR. Second, in the images you are about to see, the seals have not been cleaned in any way, shape, or form. I pulled these out of the car and immediately took the pictures. Prepare to be WOW’d; I know I was…




Besides the clean injector body, there is a more subtle detail that needs to be pointed out. If you look at the very edge of the flared lip on the seal you will notice that the black soot does not go all the way to the edge. This further confirms that the seals are working the way Brock (@Tokay444 on MSF) had envisioned them and we can also see this “clean ring” in the cylinder head below.


In the image below you will notice that the seal is dirty on the inside, but that’s okay – that happens by design. The “shelf” that you see midway up on the inside of the seal seals against the injector body instead of in the OEM location further down around the injector nozzle. This change in sealing location allows the flared edge to deflect how it needs.


If I haven’t convinced you yet why you need injector seals for your Speed3 then you’re hopeless…you should go get a Civic or something else that’s slow…


Between our results and the reviews given to us from our alpha testers we have great confidence in the seals and you should too! Keep an eye out for these to be released very soon! Zoom – Zoom! -Barett, CS Engineering