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BMW E90 E92 E93 335i TT Touring Exhaust Mufflers (Coupe,Sedan incl. XI) #FBMW-1025


Product Details

BMW E90 E92 E93 335i TT Touring Exhaust Mufflers (Coupe,Sedan incl. XI) #FBMW-1025

Precision crafted using 100% T-304 stainless steel and mandrel bending, this exhaust system is manufactured as an easy replacement for the factory system. By utilizing the factory mounting locations this system requires a single cut of the factory system and a supplied clamp for installation. All Billy Boat Exhaust systems for the BMW 335i come complete with mounting hardware and are direct replacement for stock exhaust systems. Attention to detail in manufacturing means easy installation. No machining. No down time. Just a faster, better sounding, better looking BMW E90s Exhaust right out of the box. Guaranteed for life against corrosion, rust or burn through and two years for materials and workmanship.

Billy Boat Exhaust line of performance exhaust for the BMW E90 335 incorporates the latest in resonance control technology, BBE’s proprietary Purge Resonance Technology or PRT as it is known. Completely reengineered the PRT system allows you to have a mild exhaust note at cruising speeds yet a forceful note on aggressive driving. The complex yet simple design gives you the increased sound and performance you are looking for with its straight through design on moderate to hard acceleration and then the unique purge chambers cancel out the unwanted interior noise during low rpm cruising speeds.

The development team here at Billy Boat Exhaust did extensive testing on the muffler exhaust system for the BMW E90 , looking at the both the 3.0″ exhaust and the 3.5″ exhaust. We found the best performance and best turbo spool-up to be with the 3.5 muffler system, which is slightly larger than the factory system. This allows us to maintain the low restriction muffler for quick acceleration, while gradually increasing the exhaust velocity throughout the system for greater horsepower and torque. These results have been confirmed by the chassis dyno and by our customers. The use of our PRT muffler design keeps the tone aggressive yet unobtrusive.

  • Mandrel bent from the highest-grade T-304 stainless steel.
  • Designed, tested, and manufactured to the finest hand-made integrity found in any exhaust system.
  • Limited Lifetime Warranty
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Lifetime Warranty

Have more questions? Contact us!

The Magnuson-Moss Warranty Act makes it illegal for companies to void your warranty or deny coverage under the warranty simply because you used an aftermarket part. READ MORE…

product image WARNING: This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing, or thermal cutting can expose you to chemicals including Chromium, Nickel, Cobalt, Arsenic, Cadmium and Lead which are known to the State Of California to cause cancer, birth defects and other reproductive harm. For more information go to www.P65Warnings.ca.gov
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The Billy Boat Exhaust system is a high-performance, emissions compliant muffler system that requires special installation care. Since the factory exhaust system is a one-piece design it is necessary to “cut-and-clamp” when installing the Billy Boat Exhaust system. It is recommended that a professional exhaust technician perform the installation.

  1. Disconnect the battery negative terminal for safety and to reset the vehicle’s on-board computer.
  2. Secure the vehicle on a wheel lift.
  3. Measure 3-inches from the center of the bend nearest the passenger rear muffler and mark with a scribe or permanent marker. Repeat for the driver side rear muffler Remember, it’s always better to leave it long and trim as necessary. (See fig-1 and fig-2)FBMW-11025install-1   FBMW-11025install-2
  4. Cut straight across the pipe until completely through. Remove burrs from the remaining exhaust pipe.
  5. Remove the vacuum tube from the driver side muffler. Unbolt the rear muffler hangers from the chassis and remove with the muffler still attached.
  6. Transfer the hangers off the original muffler to the new Billy Boat Transfer the ground strap to the new muffler. Slip the supplied adaptor into the new muffler pipe and clamp in place.
  7. Using the provided stainless steel band clamp, slip the inlet-end of the Billy Boat Exhaust muffler over the remaining exhaust pipe. The fit may be tight, as it should be. Attach the vacuum tube to the new vacuum assembly.
  8. Once the muffler and tip are aligned tighten the stainless steel clamp. While not absolutely necessary, it is recommended to spot-weld the joint of the Billy Boat Exhaust and the factory exhaust pipe to prevent slippage.
  9. It is normal for stainless steel to discolor slightly. To ensure a quality, lasting finish, thoroughly wipe down the entire Billy Boat Exhaust prior to starting.
  10. Reconnect the battery negative terminal and start the vehicle. Listen for exhaust leaks and ensure there is no contact between the Billy Boat Exhaust system and any component of the vehicle.

Billy Boat Exhaust Safety, Installation and Liability Statements

SAFETY: Appropriate disassembly, assembly methods and procedures are essential to ensure the personal safety of the individual performing the kit installation. Improper installation due to the failure to correctly follow these instructions could cause personal injury or death. Read each step of the installation manual carefully before starting the installation.

  • Always wear safety glasses for eye protection.
  • Place the ignition switch in the OFF position.
  • Always apply the parking brake when working on the vehicle.
  • Block the front and rear tire surfaces to prevent unexpected vehicle movement.
  • Operate the engine only in well-ventilated areas to avoid exposure to carbon monoxide.
  • Do not smoke or use flammable items near or around the fuel system.
  • Use chemicals and cleaners only in well-ventilated areas.
  • Batteries can produce explosive hydrogen gas which can cause personal injury. Do not allow flames, sparks or flammable sources to come near the battery.
  • Keep hands and any other objects away from the radiator fan blades.
  • Keep yourself and your clothing away from moving parts when the engine is running.
  • Do not wear loose clothing or jewelry that can be caught in rotating or moving parts.

VEHICLE SUPPORT WARNING: Should the purchaser decide to install this exhaust product at home, be warned that car or light duty truck/van “bumper” jacks are intended for emergency use only. The use of frame contact jack stands in conjunction with a floor jack as main support is highly recommended to minimize accidental dropping of a vehicle while the installation proceeds. We recommend the use of a shop hoist if possible. Please use caution!

GENERAL STATEMENT OF LIABILITY: While we provide information for do-it-yourself installation of exhaust systems and related items, these operations are not without risk. Injury may occur during an installation or exhaust systems and their components may be damaged in the process. We are not responsible or liable for damages that may be sustained to persons or property during an installation. For this reason, we recommend professional installation as the best option when at all possible. While care has been taken in the preparation of the information contained in this web site, Billy Boat Exhaust and BillyBoatExhaust.com does not and cannot guarantee its accuracy. Anyone accessing this information does so at their own risk. It will be assumed that access indemnifies Billy Boat Exhaust and BillyBoatExhaust.com from any and all injury or damage arising from such use.

LOCAL LAWS & LIMITATION OF LIABILITY/DISCLAIMERS: Local Laws & Limitation of Liability/Disclaimers: The regulation of emissions production, noise levels and safety standards is undertaken by the federal government, each of the fifty state legislatures, and by many local municipalities, towns and counties. The manufacturer makes no warranties of merchantability, of fitness for a particular purpose, or that its products are approved for general use, or that its products comply with laws, regulations or ordinances in the states where they may be sold to the ultimate purchaser, the consumer. The entire risk as to the conformity of this product in any such state and as to repair, should the product prove to be defective or non-conforming, is on the retail purchaser, the buyer, the ultimate consumer of such product and it is not upon the seller, distributor, or manufacturer. In this connection, retail purchaser, the buyer, the ultimate consumer assumes the burden of the entire cost of any and all necessary service, alterations, and or repair. The foregoing statement limits the liability of the manufacturer.

If you have any questions please feel free to give us a call. Our direct line to the sales departments is 1-888-228-7435, ext 18. We are in Phoenix, AZ and can be reached 8am-5pm. Should you have questions that images would help explain, please email Mike at mike@bbexhaust.com.

*Please note, we do not follow daylight savings time if you are contacting us outside of Arizona.

We try to put as much information as possible within our product pages to help with application choice and the installation process. The business you purchased our product from can be a wealth of information, but should you need additional help and information, please feel free to call or our sales department.

Monday-Friday 8:30am-5:00pm Arizona time.
888-228-7435 x18 or 623-581-7600 x18

*Note that Arizona does not follow Daylight Savings Time.

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