CST6 Turbo Upgrade - 2006-2013 Mazdaspeed

High Performance Focused

The CorkSport CST6 is designed to provide big power potential without the need for a custom turbine flange. It has proven to make mid 500WHP on a “moderate” 26-28psi or be pushed to its limit and make 684WHP at 38-40psi. Don’t think this means poor spool characteristics though as the CST6 makes 20psi by 3800-3900RPM!

Optimized Turbine Housing

The CST6 uses 0.82 A/R turbine housing in EWG setup only with an optimized scroll design to maximize power potential of the stock Mazda flange. These features offer great spool characteristics for a turbo of this size without impacting maximum power potential. Best of all, it fits exactly where your OEM turbo did!

Anti-Surge Compressor Cover

To go with the high-performance turbine housing is a 4” inlet compressor cover with anti-surge ports. A 4” inlet was chosen to remove any choke points in the system when used with 3.5” or 4” intake while the anti-surge ports increase the compressor map width for peak performance. Again it maintains OEM fitment so you do not have to modify your existing parts.

Ball Bearing CHRA

The CST6 uses a tried and true dual ceramic ball bearing Garrett CHRA. We went ball-bearing with the CST6 to increase durability, especially since the large wheels and high boost levels cause a greater load on the CHRA. We specially modified the Garrett CHRA though to fit with the OEM Mazda oil drain line to simplify your installation.

Proven Wheel Combo

Moving the air in the CST6 is again a tried and true combo: the Garrett GTX3576R wheels. Featuring a billet 11-blade compressor wheel rated at 64 lb/min and a 10-blade turbine wheel, the CST6 spools impressively fast, making 20psi by 3800-3900RPM.

Billet Compressor:

Utilizing the Gen1 GTX76 billet compressor wheel, the CST6 can efficiently support 64 lbs/min flowrate and boost pressures to 40psi.

High Flow Turbine

Paired with the compressor wheel is a Garrett GT35 turbine wheel. This wheel uses a 10-blade design which reduces overall rotating mass and thus improves response and spool.

Designed for EWG

In testing it became clear that an internal wastegate setup simply wouldn’t cut it for the CST6. So we perfected the CST6 with an EWG housing for the best in boost control. Each CST6 comes with the elbow and clamp to fit a Tial 44mm (or equivalent) wastegate. If you want to further simplify your install, be sure to pick up the optional CS direct fit dump tube so no fab is needed on your CST6 install!

Hardware and Gaskets Included

Each CST6 comes with new gaskets, turbine studs, turbine nuts, new banjo bolts with crush washers, and the coolant lines you need for installation.

• Vehicle Fitment: 2006-2013 DISI MZR found in the Mazdaspeed 3, Mazdaspeed 6, & CX-7
• Developed in America: Designed, tested, and validated in Vancouver, Washington, in the Pacific Northwest.
• CorkSport Service & Support:Receive a 1-year warranty, full-color installation instructions, all of the needed installation hardware, and knowledgeable telephone installation support.

• Auxiliary fueling required for peak power operation of this turbocharger.
• EWG designed for Tial 44mm or equivalent external wastegates.
• External wastegate is NOT included with turbo.
• EWG dumptube/screamer pipe is NOT included with turbo.
• Some aftermarket and all OEM downpipes will NOT clear the elbow that is included with the CorkSport EWG Turbocharger. Check the “Fitment Notes” tab for details.