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IE Performance ECU Tunes For Audi B9/B9.5 2.9T RS5 & RS4

Marsoni M251S
Sale price$449.50
Pay 4 payments of $112.38 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
IE Performance ECU Tunes For Audi B9/B9.5 2.9T RS5 & RS4LEADING FEATURES Innovative mobile tuning for an easy install Thrilling power and acceleration gains TrueFlex Tuning for flex fuel ethanol 91, 93, & 104 fuel maps (95, 98, 108 RON) Stage 1 for stock hardware or basic bolt ons Stage 2 for aftermarket downpipe support Available with matching transmission tunes Apple & Android phones supported Take control of your Audi RS4or SQ5 by unlocking thrilling power and acceleration from your phone! Our cutting
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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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4.8 ★★★★★
Based on 1264 reviews
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A
Verified Purchase
Amazon Customer
Louisville, US
★★★★★ 5
DIY, super easy to replace.
Fit 2018 crv. I like to change out my air filters before taking my car to the dealership for an oil change. Saves a ton of money to DIY. Easy to do perfect fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
Y
Verified Purchase
Yadira Purdue
Omaha, US
★★★★★ 5
Ok
Ok
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
M
Verified Purchase
Mark Stanley
Cuba, US
★★★★★ 5
make sure you get the right one for your model and engine
Fit was perfect
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
A
Verified Purchase
Alice L.
Boise, US
★★★★★ 4
Works and is inexpensive
Used this for a 2019 Honda CRV, works and saved us a lot of money over getting it at the dealer. Easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 21, 2024
L
Verified Purchase
Love Beck Handmade
Cuba, US
★★★★★ 1
Did not fit 2018 CRV 2.4L
This did not fit our 2018 CRV 2.4L, at all. Yes u know it's the engine air filter and not the cabin air filter. We replaced them both and this didn't fit. I ordered another one from a different listing and it fit like a glove.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2026

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