- Exhaust - High-Flow Cat Downpipes with X-Pipe and Integrated Baffle System (JHM) for the B8 S5 4.2"
Exhaust - High-Flow Cat Downpipes with X-Pipe and Integrated Baffle System (JHM) for the B8 S5 4.2"
Exhaust - Race Pipe - Stainless Steel (JHM) for B9 S4-S5 3.0T$1,199.95Add to Cart | Wishlist
JHM Supercharger Kit for B8-S5 w/ 4.2L FSI V8, Stage 1
Select options & add to cart to view final price
JH Motorsports is proud to offer the JHM B8-S5 4.2L Catted Downpipes with X-pipe featuring the Integrated Baffle System!
** INTEGRATED BAFFLE SYSTEM VERSION **
The Integrated Baffle System Version of our JHM HFC Downpipes w/ X-Pipe is for those who are looking for a quieter exhaust system. The baffles have been designed and strategically located in the downpipes to reduce unwanted drone and rasp (Depending on your catback, results may vary). We used popular exhaust systems for our trials (AWE Touring & Track) along with our JHM Race Pipes and were able to get the interior noise down to just 70db while cruising at 70mph in 6th gear at 2500RPM with the JHM Baffled Downpipes. That is 10db quieter than the AWE Touring and 15db quieter than the AWE Track systems WITHOUT the JHM Baffled Downpipes installed. During our testing, at 70db we heard more road/tire noise than exhaust. Note: The main purpose of the Integrated Baffle System is to combat unwanted drone and take the edge off rasp.
(Tested on a B8 S4 6-Speed Manual)
Built as a direct OEM replacement, our JHM Catted Downpipes with X-pipe are easy to install with simple hand tools with no cutting or welding required. Our X Pipe is designed to increase low-end torque and maximize power throughout the entire RPM band. Moving the Catalytic Converters further downstream into the downpipes, we are able to take full advantage of our JHM B8 2.5" Race Pipes and alleviate heat build-up close to the engine, increases Catalytic Converter longevity, as well as overall engine performance.
-JHM High-Flow Cats located further downstream
-JHM V-Band Downpipe to X-Pipe Connection for easy install
-JHM Integrated Baffle System
-Direct OEM Fitment without modification
EXPLANATION OF THE B8-S5 4.2L EXHAUST SYSTEM:
There is a lot of confusion surrounding the B8-S5 4.2L Exhaust System Setup mostly due to the current "brand-x" systems available on the market. The B8 Exhaust can be split up into 5 parts. Starting from the outlet at the cylinder head you have the exhaust manifolds, the cat or test-pipes, the downpipes (this includes the x-pipe on the JHM B8-S5 4.2L Full Exhaust System), and the remaining portion that includes the mufflers that exit at the rear of the car (sometimes this entire section is called the cat-back). See below for a diagram of the JHM B8-S5 4.2L Exhaust System:
FITMENT: Fits all B8-S5 4.2L Engines.
PROUDLY ENGINEERED AND MANUFACTURED IN THE UNITED STATES OF AMERICA
For shipping quotes: Please sign in or join then put the items you want in your shopping cart and proceed to checkout.
Off-road use ONLY: THIS PRODUCT IS FOR RACING COMPETITION ONLY AND IS NOT LEGAL FOR USE IN HIGHWAY OR STREET VEHICLES OR OTHER NON-RACING COMPETITION OFF-ROAD VEHICLES. BY PURCHASING THIS PRODUCT YOU ACKNOWLEDGE ITS INTENDED USE.
|Audi||S5||B8-B8.5 (2008-2017)||4.2l V8 32v FSI|
By Purchasing any Off-Road use ONLY products from JH Motorsports, Inc. I acknowledge and understand the following disclosure. (This notice is located at the bottom of the page description of affected products on our website.)Vehicle Code § 27156:
(b) No person shall operate or leave standing upon a highway a motor vehicle that is required to be equipped with a motor vehicle pollution control device under Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code or any other certified motor vehicle pollution control device required by any other state law or any rule or regulation adopted pursuant to that law, or required to be equipped with a motor vehicle pollution control device pursuant to the National Emission Standards Act (42 U.S.C. Secs. 7521 to 7550, inclusive) and the standards and regulations adopted pursuant to that federal act, unless the motor vehicle is equipped with the required motor vehicle pollution control device that is correctly installed and in operating condition. No person shall disconnect, modify, or alter any such required device.
(c) No person shall install, sell, offer for sale, or advertise any device, apparatus, or mechanism intended for use with, or as a part of, a required motor vehicle pollution control device or system that alters or modifies the original design or performance of the motor vehicle pollution control device or system. Health and Safety Code § 43000:
43001. The provisions of this part shall not apply to:
(a) Racing vehicles.
As the aforementioned code sections outline, it is against the law to operate or use a vehicle on public streets or highways with modified, altered, or disconnected motor vehicle pollution control devices. This may include but is not limited to, Evaporative Fuel Controls, Catalysts, DPF, PTOX, PCV Systems, Exhaust Gas Recirculation Systems, Oxygen Sensors, Thermostatic Air Cleaners, Air Intake Systems, Fuel Injectors, Regulators, Adjustable Cam Gears, ECU Programming, Mapping, or other Computer Modifications. Air Pumps, Air Injection, Timing, and any other Emission System Modification(s).
Purchaser acknowledges and certifies to JH Motorsports Inc., that Purchasers vehicle will only be used for racing applications or off road vehicle use only. Purchaser requests these modifications for the purpose of enhancing the vehicle for competitive Racing Applications and will not use this vehicle on public streets or highways. Purchaser agrees to indemnify JH Motorsports Inc., all employees, officers, owners, and subsidiaries for any civil or criminal liability arising out of use of Purchasers vehicle on public streets or highways as Purchaser has been duly notified of the laws and regulations regarding disconnecting, alteration, or modification of a vehicle’s pollution control devices. Purchaser understands and has been advised the driving of a vehicle on public streets or highways could result in criminal or civil penalties.
Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.
Learn More: www.p65warnings.ca.gov
Select options & add to cart to view final price