The perfect aggressive upgrade for your M3/M4
The perfect aggressive upgrade for your M3/M4
Built to endure the extreme temperatures of professional competition, ensuring consistent rear-end stability during aggressive turn-in and heavy braking.
Provides extra clearance, allowing for the installation of larger exhaust systems
Enables the control of a single electronic exhaust valve
Please visually confirm the exhaust valve actuator installed on your vehicle prior to purchase or installation - Only compatible with systems requiring a single electric valve actuator
Unleash the power of your car by reducing the biggest restriction in your exhaust, while remaining emissions compliant.
Astonishing gains up to +295 Horsepower & 344 Torque! 100% Bolt-on installation / Upgrade. You are required to ship Weistec your OE turbochargers as a core.
You are required to ship Weistec your OE turbochargers as a core.
Increase of +121 Horsepower, and +269 Torque! Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications!
This software is only compatible with Windows PC / Laptop. CARB certified for sale in all 50 states.
Increase of +170 Horsepower, and +294 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance exhausts & high-flow air filters!
This software is only compatible with Windows PC / Laptop.
Amazing exhaust note from your S55!
Improved form and function for your air induction system! Motorsport-grade carbon fiber and dry media air filters shows a massive 27% increase in airflow efficiency!
This product was last offered at the strikethrough price on
06-22-2026
A perfect carbon fiber upgrade that can't be missed
Ditch the stock reflectors with these inserts from Acexxon.
A perfect length, stylish alternative to the OE exhaust tips!
These downpipes replace the restrictive factory units to deliver faster turbo spool, increased horsepower, and a more aggressive exhaust note.
A perfect length, stylish alternative to the OE exhaust tips!
Reduces weight, improves torque and horsepower numbers, and adds a deeper more gowl-like sound than stock.