News

A New Thermal Problem — The S68 in the G90 M5 and G99 Touring is the first M5 powertrain where the intake path shares a bay with a battery pack. That changes what an intake component is being asked to survive, and it changes how material choice should be judged.

Not a Sound Upgrade — a Heat Decision. On the G90 M5 and G99 Touring, the front-mount intake pipe is not simply a path for air. It sits in the one bay where a hybrid V8 dumps heat from two turbos, an electric motor and a battery pack at the same time. That makes material choice a thermal decision before it is a cosmetic one.

We work primarily in 304 stainless for exhaust components. Here is what the grade actually controls, and when a higher-chloride-resistance option is worth asking about.

Both resist corrosion and both weld cleanly, but they behave differently. Here is what actually changes between a titanium system and a stainless one.

Matching is a measurement problem, not a guess. Here is what to photograph and measure so a new section meets the system already on your car.

Chassis coverage is identical between titanium and stainless. Material is a separate decision based on weight, sound, budget and how you use the car.

Valved and non-valved cars differ in the rear section and in the control routing. Here is what to tell us so your aftermarket system keeps the valve function working.

Stop and contact us with photos before cutting, grinding or welding. Here is the evidence we need, and why the first ten minutes decide which options you keep.