Performance Exhaust Systems

Notes From the Workshop

Building, materials and development notes from the exhaust workshop, written around the parts in the range.

The blog collects the workshop's longer notes: how the parts are built, how the materials compare, and how custom work is developed. Each post is anchored to a family in the range and links back to it.

Six guidesBuilding and buying notes
Process firstHow parts are made
MaterialsSteel and titanium compared
DevelopmentSample, data and on-car

2026-11-03
How a Performance Downpipe Is Built: Mandrel Bending, TIG Welding and Fixture Checks
A downpipe looks like the simplest part on a turbo car: a bent pipe with a flange at one end. The build behind it is less simple, because the pipe has four interfaces to satisfy at once — the turbo outlet, the sensor…
2026-11-03
Choosing an Exhaust Material: Stainless Steel or Titanium
Every exhaust program eventually has to answer one question in writing: which material? In this range the choice is between SS304 stainless steel, the standard grade for every family, and titanium, the specified…
2026-11-03
Developing a Custom Exhaust From a Sample: Scan, CAD, Prototype, Fitment Check
The most common custom job in the workshop starts with a parcel: a sample exhaust part, sent by a buyer who wants a production source for it. That route runs in a fixed order — what to send, what the workshop does…
2026-11-03
Valved Exhaust Systems: Electronic and Vacuum Valves, and What Changes When They Open
A valved exhaust is one system with two internal paths, and a valve that chooses between them. It is the most asked-about option in the catback range and the least well described in most catalogues, where the valve…
2026-11-03
Turbo Manifold Design: Runners, Collectors and CNC Flanges
A turbo manifold is a junction with a job description: collect the exhaust from every cylinder, deliver it to one turbocharger, hold that turbocharger in a precise position against the cylinder head, and keep doing…
2026-11-03
Charge Pipe Kits: What a Kit Contains and How Fitment Is Confirmed
Charge pipe kits are the part of the range most often misunderstood at ordering time, because they are sold as order-book kits rather than a standing catalogue: a buyer sees a kit title, assumes a box, and discovers…