Touring Mufflers

Increase power without sacrificing sound quality
Mfg Part #
ECS Part #
Billy Boat Performance
Availability: Direct Ship, Expected Ship Date: Jul 12, 2021
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Product Details

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

Make Model Submodel Engine
BMW E90 335i N54 3.0L
BMW E90 335xi N54 3.0L
BMW E90 335i N55 3.0L
BMW E90 335xi N55 3.0L
BMW E92 335i N54 3.0L
BMW E92 335is N54 3.0L
BMW E92 335xi N54 3.0L
BMW E92 335i N55 3.0L
BMW E92 335xi N55 3.0L
BMW E93 335i N54 3.0L
BMW E93 335is N54 3.0L
BMW E93 335i N55 3.0L
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.


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Manufacturer names and/or part numbers are used only for identification purposes.

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