IE Performance Transmission Tune for Audi B9 S4, S5, and SQ5

IE Performance Transmission Tune for Audi B9 S4, S5, and SQ5

Marsoni

M251S

$349.50

Get it in 3 business days with 1 day shipping. Friday, May 29

IE Performance Transmission Tune for Audi B9 S4, S5, and SQ5Please Note: This is a Stage 2 TCU file. Stage 1 TCU file is INCLUDED with purchase of ANY Stage ECU file Enables launch control in drive, sport, and manual modes Lightning fast shift speed Optimized shift RPM for the fastest acceleration Enables 6500 RPM limit in all gears in manual 7th and 8th gear enabled in sport mode Enables downshifting into 1st gear without coming to full stop Refined drive for the automotive enthusiast Reduces time for double

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Your IE Performance Transmission Tune for Audi B9 S4, S5, and SQ5 orders ship within 1-2 business days.

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Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

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We offer a 30-day return/exchange service after receiving.
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My daughters 2008 Honda Accord 2.4L 4 cylinder that had a very noisy power steering pump which was also starting to leak. I was about to buy a new pump when I found out it might just be leaking from the hoses to the pump. I bought these O rings for the hose connections at the power steering pump, and spent 15 minutes replacing them. Pump is quiet again! The suction hose can develop a leak, letting air get into the pump which creates the loud noises. This fix is all I needed, and was much cheaper and faster than replacing the power steering pump.

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Reviewed in the United States on March 10, 2026

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Josh

Draper, US

★★★★★ 5

Perfect!

Fits exactly on my 2000 civic and I have not had any issues!

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Reviewed in the United States on February 18, 2026

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Amazon Customer

Cuba, US

★★★★★ 5

Good brand

They work good so far.

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Reviewed in the United States on March 4, 2026

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Amazon Customer

Phoenix, US

★★★★★ 5

Perfect fit for 2004 Honda Element, Fixed leak!!

Perfect fit for 2004 Honda Element Dx. Fixed my power steering leak and was super easy to install. Took 5-10mins at most. Would definitely buy again, 5/5 stars!!!

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Reviewed in the United States on December 26, 2025

Verified Purchase

San Leandro, US

★★★★★ 5

Easy to install

Perfect fit, good quality and value for the price

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Reviewed in the United States on October 17, 2025