Precision crafted using 100% T-304 stainless steel and mandrel bending, this 335i TT touring exhaust system is the milder of the two offered by B&B. By utilizing the factory mounting locations for a easy installation this system requires a single cut of the factory system on each side to remove and comes with all the necessary mounting hardware.
Not wanting to just develop any exhaust system B&B designed a Bi-modal, meaning it has two passages, or modes, that the exhaust can travel through the muffler for the TT. With a butterfly valve on the driver’s side outlet all of the exhaust is forced through the mufflers. Incorporating B&B’s proprietary Purge Resonance Technology or PRT as it is known in the mufflers you get a mild exhaust note while cruising around and the valve is closed.
A quick punch of the throttle opens the valve and lets out a nice robust roar all without being obtrusive. The butter fly valve installs with a OEM Fit by reusing the factory vacuum lines. With this low restriction muffler allows for less turbo lag, faster spool up for quick acceleration and increased horsepower and torque. These results have been confirmed by the chassis dyno and by our customers. To give the car a bold and distinctive look B&B uses a pair of 4” round double wall tips.
No engine management sensors are moved or altered therefore this system is 50 state emissions legal and is backed with their limited LIFETIME warranty.
This Part Fits the Following Vehicles