Graveyard performance9/19/2023 ![]() This is an optional feature for the kit, but one we highly suggest because it’s just so damned easy. Making life even easier…we opted to develop a pre-fabbed dump tube (screamer pipe) for the Tial 44mm EWG. You can leave you turbocharger unmoved connected to the downpipe and intake system, you just install the flange elbow after the manifold is in and bolted to the engine. With the modular design, you are not fighting the entire bulk for the manifold and flange at the same time. Speaking of install, compared to the typical performance exhaust manifold the CS design is cake to install. This is MUCH MUCH cheaper and easier to change! CorkSport With any other manifold, you would have to buy another $900+ manifold to get the new flange, but with the CorkSport Exhaust Manifold, you just have to get the new flange elbow for your setup. Say you pull the trigger on the OE Stock Flange today, but a year from now you want to upgrade your build to a Precision V-band flange. Sure all these options are available today from other options, but none are modular. This is unlike any other manifold available for the Mazdaspeed today…you can choose your flange between OEM Stock Flange, Precision V-Band, or T3. Next up in design, and arguably the most exciting and unique aspect, is the modular flange system. Overall we were able to increase peak flow 45% over the OEM manifold and 33% over the XS Power V3. With that flexibility in design, we were able to increase peak flow and improve flow balance per runner. This allowed us to increase the inner diameter of the runners to 1.59 inches, achieve a 0.200-inch wall thickness, and fine-tune the path and bends of each runner to optimize runner length and flow. With investment casting, we had a lot more flexibility in design with the bend radius, diameters, and wall thickness of the individual runners. Check out our other Blogsįollowing up is Design: The list of details that went into the design is far too long to list here, but we can cover the major items that define the CS Exhaust Mani. Like most exhaust manifolds, we opted to use 304 stainless steel because it is corrosion-resistant, handles heat well, and is a common and cost-effective material. In a nutshell, we opted for a cast manufacturing method because it reduced the chance of failure modes, reduced the overall size and weight, and gave us more flexibility in design. Material & Manufacturing: In our initial investigation and vetting of this project we strongly considered two primary manufacturing methods Casting and Tubular fabrication ( check out the blog here). ![]() The most obvious is the design: this includes the overall shape and the type of material & manufacturing. ![]() That’s a great question and one that can easily be answered with multiple great reasons. But with so many options currently available what makes the CorkSport option compelling? Why should you care? ![]()
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