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Fabspeed Audi RS5 (B9) XperTune Performance Software (2018+)

Marsoni M251S
Sale price$1097.97
Pay 4 payments of $274.49 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Fabspeed Audi RS5 (B9) XperTune Performance Software (2018+)SKU: AUD. RS5. ECU Fabspeed Audi RS5 (B9) XperTune Performance Software (2018+) Boost your 2018+ Audi RS5 B9 2. 9L V6 engine to 510 WHP and 576 TQ from stock 450 WHP and 443 TQ with Fabspeed XperTune ECU software. This upgrade reprograms sensor inputs air fuel ratios and boost pressure for stronger horsepower torque and sharper driving response. It fits all RS5 B9 models while preserving everyday drivability and long term reliability. Key Features
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.0 ★★★★★
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Verified Purchase
Chris
Dallas, US
★★★★★ 5
EPAuto stuff works and fits
Love their auto filters, tools and tire air compressers. EPAuto stuff works great and always fit!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
A
Verified Purchase
Amazon Customer
Omaha, US
★★★★★ 5
Great price, easy install
OEM fit and very easy to install. No issues at all — everything worked exactly as expected.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 19, 2025
A
Verified Purchase
Ashley
Louisville, US
★★★★★ 5
Great filter
Always as expected, purchased multiple times!
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Reviewed in the United States on May 11, 2026
L
Verified Purchase
Lori K
Chelsea, US
★★★★★ 5
Good fit
Good fit
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Reviewed in the United States on April 12, 2026
S
Verified Purchase
SanJoseCA
Draper, US
★★★★★ 5
Looks exactly like the original car filter, but for a lot less than from the car dealership
Looks as good as the OEM filter and at a better price than at the car dealership. Hopefully it should do the filtering job.
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Reviewed in the United States on April 26, 2026

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