Exhaust Systems
Where a Performance Exhaust Gets Its Sound
What decides how a performance exhaust sounds: pipe diameter, bends, muffler and resonator tuning, titanium versus stainless steel, and valved systems.
Workshop Notes
Stories from the garage.
On carbon fiber, exhaust and intake: what suits your car, why and how.
Vehicle Upgrade GuideCarbon Fiber for the BMW M3 G80 and M4 G82: Which Part First
A part-by-part look at prepreg dry carbon fiber for the G80 M3 and G82 M4: hood, rear wing or lip, diffuser, side skirts and mirror caps. What each one does, and the order we would fit them in.
WheelsForged vs Cast Wheels: What the Difference Means on the Road
Cast or forged? What the manufacturing difference does to weight, strength and the way the car drives, and who a forged set actually suits.
Intake SystemsPerformance Air Intake Kits: Open Cone Filter or Sealed Carbon Airbox
What a performance intake really changes on a modern engine, how an open cone filter compares with a sealed carbon airbox, and what to check before you buy one.
Exhaust SystemsCat-Back vs. Downpipe: Which Exhaust Upgrade Comes First
Cat-back and downpipe sit at opposite ends of the exhaust and do different jobs. Here is what each one changes and which we would fit first.
Carbon FiberPre-Preg vs Wet-Lay Carbon Fiber: Where the Difference Comes From
Pre-preg and wet-lay carbon fiber parts look the same when new but age very differently. Here is what separates them and which one is worth fitting.
Intake SystemsCold Air Intake Systems: How They Work and What to Expect
What a cold air intake changes in power, response and sound, and why you should order by engine code rather than model name.
Exhaust SystemsTitanium Exhaust Systems: Weight, Heat, Sound and Durability
How titanium compares with stainless steel for exhaust weight, heat, sound and longevity, and which cars already run it from the factory.