Audi S5 Apr Tune Audi S4 X Pipe
April Audi B8 S4 3.0T FSI RSC™ Functioning Exhaust System
APR is pleased to present our first RSC™ Frazzle System for the Audi marque in the new 3.0T B8 S4 Model Years 2010+.
Reflective Sound Cancellation allows for maximum exhaust gas menses while completely eliminating in cabin sound resonance (drone). RSC™ incorporates innovative technologies developed in conjunction with NASA. With express use of packing materials and no baffles, RSC™ allows for a completely direct and free flowing exhaust path through the RSC™ mufflers. Reflective Counterfoil bounces the undesirable sound waves into each other to attenuate the moving ridge and completely eliminate the low frequency tones that create drone. Each RSC™ muffler is tuned to eliminate specific, undesirable sound frequencies assuasive only the engine'south desirable frazzle notes to be heard and improving performance.
To continue with even further refinement and ability potential out of the 3.0T, new features never before offered by April Exhaust Systems are introduced to the B8 S4 application in improver to the patented RSC™ Technology:
Unique Exhaust Tip Options
APR's RSC™ Operation Exhaust for the B8 S4 introduces modular tip blueprint that allows the end user to specify an initial tip color of either Stainless Steel or Diamond Blackness and other tips can be ordered separately and inverse at the owner's pleasure. Be on the lookout for special edition, express run tip options in the future to make your S4 even more exclusive and individual to your tastes. Installation and removal of frazzle tips can exist accomplished easily with merely basic mitt tools.
Integrated Elliptical Crossover Assembly (Ten-pipe)
Normally Aspirated engines and Supercharged engines however rely on proper exhaust tuning to promote the optimal period velocity of exhaust gasses leaving the exhaust ports. APR introduces a unique and proprietary 10-pipe design that was developed through multiple reiterations to perfectly lucifer the pulse of each cylinder in the 3.0T to provide optimal exhaust flow. Frequently times, exhaust manufacturers will incorporate 10-pipes into all Unremarkably Aspirated or Supercharged applications generically without realizing that the sizing and shape of the ports in the Ten-pipe crave specific tuning to each engine awarding. April's Engineering Team has discovered a trade secret exclusive to APR'due south RSC™ Exhaust System that promotes maximum velocity of exhaust gasses by style of the Ten-pipe to ensure your April RSC™ Exhaust System volition compliment your future modification choices at fifty-fifty the highest horsepower and torque possible.
Weighted SPL and Competitive Comparison Analysis
The following data was measured from an Audi B8 S4 three.0T FSI at a 70 MPH abiding speed cruise. Sound measurements are made inside the vehicle and recorded as audio pressure level level (SPL) in decibels. Comparisons show the resulting sound levels tested with no mufflers, stock mufflers, with a competitor'due south exhaust arrangement, and the new APR RSC Performance Exhaust system.
Many of the competing exhaust systems do non significantly reduce the low frequency tones that occur around 50 to 200 Hz. Information technology's these frequency tones that are responsible for "drone". RSC acoustic prediction methods and design techniques reduce these tones without compromising the sporty sound we all enjoy from high performance automobiles.
The light gray bars show data taken from the S4 with a competitor'due south frazzle system installed. The red bars compare results from the APR RSC™ Performance Exhaust system. The dominant depression frequency tone responsible for drone occurs at 131 Hz and has been significantly reduced with the April RSC™ Operation Exhaust system past about 12 dB compared to the competitor'south exhaust organization.
The post-obit graph illustrates the narrowband audio-visual spectra for the competitor'due south frazzle system and the APR RSC™ Performance Exhaust system. Both the dominant tones and the broadband sound levels are quieter for the APR RSC™ system over about of the frequency range, especially around 131 Hz where drone notes dominate.
RSC™ engineering science provides audio levels comparable or even quieter than OEM frazzle systems at cruising speed. RSC's™ straight through design minimizes back pressure level and provides gains greater than other performance exhaust systems. The example shown for the B8 S4 iii.0T FSI demonstrates the power to tailor the sound spectra to eliminate drone while maintaining a sporty sound, particularly nether total throttle.
Full Catback Component Overview
The OEM exhaust system consists of Headers, Catalytic Converters, Resonated Downpipes, a Center Resonator, Rear Mufflers and Exhaust Tips. The APR RSC™ Performance Exhaust Organisation is a Total Catback Exhaust System as it replaces the OEM Resonated Downpipes, Center Resonator, Rear Mufflers and Frazzle Tips. Illustrated below is the OEM frazzle organisation with the components replaced by the Apr RSC™ Functioning Exhaust System in bold.
Frazzle Video
Ability Gains
| Vehicle | Engine | Transmission | Included Tips | Part Number | Price(税別) |
|---|---|---|---|---|---|
| 2010+ Audi B8 S4 | 3.0 TFSI | 6MT & S-Tronic | Polished Stainless Steel | FE100041A | ¥460,000 |
| 2010+ Audi B8 S4 | 3.0 TFSI | 6MT & Due south-Tronic | Diamond Blackness | FE100041B | ¥480,000 |
Modular tip blueprint allows the end user to specify an initial tip color and other tips can be ordered separately and inverse at the owner's pleasure.
| Vehicle | Engine | Transmission | Tip Option | Part Number | Price(税別) | |
|---|---|---|---|---|---|---|
| 2010+ Audi B8 S4 | three.0 TFSI | 6MT & S-Tronic | Polished Stainless Steel | TC100013 | ¥80,000 | |
| 2010+ Audi B8 S4 | iii.0 TFSI | 6MT & S-Tronic | Diamond Black | TC100012 | ¥110,000 |
Apr Tuned
Phone: (092) 883-9222 Fax: (092) 883-9213 Address: 1-18-3-101, Ikinomatsubara, Nishi-ku, Fukuoka, 819-0055
Copyright © 2009 Apr JAPAN All Rights Reserved.
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Audi S5 Apr Tune Audi S4 X Pipe
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