We’ve heard you asking, we’ve even seen you trying to fit our strut tower brace for the 2014-2018 Mazda 3 onto your 6. We are proud to announce the challenge is over. We’ve created a new design specifically for the 4th generation Mazda 6 and its available now!
You may have a goal of improved
driving experience or you just want a visual improvement to the engine
bay. We are offering both to you.
The polished aluminum strut bar and powdercoated steel brackets look great under the hood of the Mazda 6 and the added chassis stiffness provides improved handling and driver feedback.
Install is a breeze with color
step-by-step instructions and included hardware. If you’re looking to get even more out of
your Mazda 6 in those curvy back roads then we suggest a rear swaybar and sport
springs to go along with the CorkSport
Front Strut Tower Bar.
This package will really wake up the chassis of the Mazda 6 providing you with a sports car feel from your big sedan.
Don’t hesitate! Gets your today!
Front Strut Tower Brace for the 4th Generation Mazda 6 October 23rd, 2019Derrick Ambrose
Do you ever open the hood to you Mazda and cringe at all the
boost and vacuum hoses – You know, the string of hoses and T-fittings winding
in every direction? Here at CorkSport,
we’ve had this same feeling and decided to do something about it.
Introducing the Boost/Vacuum Block and Fitting Kit…the
simple and effective solution for your boost and vacuum accessories.
This simple part for your Mazda allows you to consolidate
your various boost/vacuum hoses to one single source. You can finally rid your
engine bay of the numerous T-fittings that plague that single hose that
connects your intake manifold and BPV.
A central boost and vacuum source is plumbed to the block
and then distributed to six standard ports with 1/8-27 NPT threads. If you have a plan and setup you are going
for then opt for the Block and Plug Kit.
If you are unsure about what
you need now or in the future, then the
complete block and fitting kit is your best option.
Either way you are sure to make a huge visual improvement to
your engine bay. A little effort now
will go a long way later with this billet aluminum and anodized boost/vacuum
Check it out here and get your today…your Mazda will thank
The Solution to all those Boost & Vacuum Hoses – CorkSport Boost/Vacuum Block October 23rd, 2019Derrick Ambrose
With a shop full of enthusiastic car guys and gals we are in love with the look and sounds of the CorkSport Cat-Back on that larger than life CX-9. Customers love the sound, especially when completed with our Skyactiv Turbo Intake, but a few requested a little bit less racecar rumble.
We are here to give our Cx9 customer what they want which brings us to a new exhaust option for the Cx9 Turbo, an Axleback!
The Axleback exhaust setup is great because you are still getting the awesome 100mm double wall slant cut tips, the high flow 80mm stainless steel piping, and an exhaust note that will still capture your attention as well as the other Cx9 owners on the road.
The in-cab exhaust volume and tone are much more subtle than the catback exhaust setup. This is your family friendly and wife approved exhaust for the Mazda CX-9. This is the “bluetooth office friendly meeting” exhaust system which is mellow at cruise but throaty when you get into the boost.
You can have your cake and eat it too. Check out the product listing for full details.
CorkSport Axle Back Exhaust for CX-9 September 27th, 2019Derrick Ambrose
We’ve talked a lot about external wastegates with our recent CST6 development but today we are happy to announce the standalone CorkSport External Wastegate Housings for the CST4 and CST5. Available right now as an update for your existing IWG CST4 or CST5, the CS EWG housings make it easy to get the best in boost control for your Mazdaspeed 3, Mazdaspeed 6, or Mazda CX-7 Turbo.
While the CST6 will only come with an EWG housing, the external wastegate (EWG for short) is a new concept for the CST4 and CST5. Both of these turbos originally hit the market with an internal wastegate (IWG) only option that has a small flapper valve on the inside of the turbine housing to let off excess exhaust gases. Instead, the CorkSport EWG housings use an offshoot from the turbine scroll that has a v-band flange on the end. This flange allows for the fitment of an external wastegate for improved boost control. To run an EWG on an original CST4 or CST5 previously, you needed an EWG capable exhaust manifold and some sort of block off for the IWG port.
The new CS EWG housings make running an EWG on your Mazdaspeed3 easier than ever. Each housing comes with the elbow and clamp needed for great fitment. We even offer a dump tube/screamer pipe that works for both MS3 and MS6 as an add-on option. If you pick up the screamer pipe to go with your housing, all you need to supply is the EWG itself.
We strongly recommend a Tial MV-R 44mm wastegate as all design work and testing used this specific wastegate. Other wastegates may require modification for use. The 44mm size is a great fit for the Mazdaspeed engines, whether you are running an upgraded turbo on the stock block or fully built one that you intend to push to the limits.
So why would you want an EWG? For starters, EWGs truly offer the best boost control setup for any turbocharged car. Because the wastegate is separate from the turbocharger itself, it is easier to place for optimum boost control, plus, the design of the actuator itself can be optimized. As a result you get a wastegate that hits boost targets more accurately and responds quicker to changes in boost. This means no more boost spikes right when the boost hits (a common problem with poor quality IWG setups), and a near-flat boost curve. The isolated actuator also makes for faster and easier spring changes should you need to service or change your wastegate preload. For more info on the design behind the CS EWG housing, check out the full blog HERE.
One of the best parts of EWG over IWG is the sounds that come with a screamer pipe! While only intended for off-road use, a screamer pipe dumps the exhaust from the EWG directly to the air. This allows for a fantastic noise during a WOT pull, that sounds truly unique. It’s not all just noise though, by venting the EWG to the atmosphere instead of venting the IWG in your downpipe, you are decreasing exhaust turbulence right after the turbine wheel, reducing backpressure. On very high horsepower setups, this often generates some extra power as the turbine housing can be used more efficiently. Check out the product video below for some great EWG sounds from Barett’s MS3.
There’s one final benefit of the CS EWG housings: housing design itself. Without having the IWG in the way to worry about, we were able to do some optimizing on the scroll and A/R. For CST4 owners, this means an increase in A/R from 0.66 to 0.82. Typically an A/R change like this will cause a slight decrease in spool time but an increase in max power potential. CST5 owners have this 0.82 A/R even with the IWG setup but there’s another benefit: greater swallowing capacity. This refers to the amount of volume in the turbine scroll. By increasing the swallowing capacity the turbine can ingest air more efficiently at the peak, which is especially important if you have an upgraded exhaust manifold or high flowing head. After all, an engine is an air pump – what good is shoving more air in if you can’t get it out?
If you’re in the market for a change on your Mazdaspeed, check out the CorkSport EWG housings for the CST4 and CST5 turbochargers. Better boost control, a more efficient housing, and best of all, a great new sound. Be sure to check out the listing for even more images and don’t be shy to ask questions we’ll be happy to help!
Mazdaspeed EWGs Made Easy! September 25th, 2019Derrick Ambrose
The long wait is finally over and you can now get your hands on the CorkSport CST6, which holds the record for the highest horsepower on the OEM turbine flange at 684WHP! In case this is the first time you’ve heard “CST6”, be sure to check out our blogs on the CS Turbo catalog, CST6 Design, and CST6 Testing. The CST6 is truly a big turbo, so if you’re ready for some serious power on your Mazdaspeed 3 or 6, read on!
Let’s start by looking at the
anatomy of the CST6. The backbone is a tried and true dual ceramic ball bearing
Garrett CHRA. We opted for ball bearings to improve response and durability,
especially when running at high boost levels the CST6 is capable of. As for
wheels, the turbine is a 10blade GT35 while the compressor is an 11blade GTX76
that is rated for 64 lb/min. This combo provides fantastic spool
characteristics for its large size, achieving 20psi by 3800-3900 with the
appropriate supporting mods and headwork like on Barett’s GEN1.
The quick spool is not due to the wheels and ball bearings alone though. A lot of research and development went into making the turbine and compressor housings the right fit for the CST6, and balance fast spool with top-end power. A 4” inlet with anti-surge ports provides plenty of air into that compressor wheel while a high swallowing capacity 0.82 A/R external wastegate turbine housing offers superior top-end power capabilities and optimum boost control. Even with all these changes, the CST6 fits in the OEM location; all you need is the external wastegate actuator and an intake that fits the 4” compressor cover.
The CST6 is definitely not all
bark and no bite though. We have thoroughly tested the CST6 up to its limits
and beyond and have had nothing but success. Check out the graph below, that is
the CorkSport CST6 in “calm” trim making mid-500s at 28psi. The difference in
power on the graph was a back to back exhaust manifold change but more on that
when we reveal more of the CorkSport Exhaust Manifold….
At the limit of the CST6 is a full bore 38psi, port-injected E85, and revving out to 8000RPM, resulting in 684.7WHP and 552WTQ. Check out the graph below. There may even be a little more to be had, with a larger 4” intake and 3.5” downpipe and exhaust.
Like every other CorkSport turbo, the CST6 comes with all new hardware, gaskets, and the needed oil and coolant lines to make your install as painless as possible. The CST6 is a little special though as it also comes with a v-band clamp and EWG elbow to help with the installation of your EWG actuator. While you will have to supply the EWG actuator itself, the elbow helps locate the Tial 44mm (or equivalent) wastegate in a usable location, whether you have an MS3 or MS6. In addition, we have a dump tube available for purchase to prevent any fabrication on your CST6 install.
So if you’re in the market for
some serious horsepower on your speed, be sure to check out the CorkSport CST6.
Let us know if you have any questions on the CST6, installation, or supporting
mods, we’re happy to help!
P.S. If you buy a CST6 share your
power graph with #CorkSport
The CST6 has Arrived! October 21st, 2019CorkSport
We are working on our blog, We will get you the best Mazda content back up shortly