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IE Performance Stage 2 Transmission Tune for Audi B9/B9.5 2.9T RS5 & RS4

Marsoni M251S
Sale price$349.50
Pay 4 payments of $87.38 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
IE Performance Stage 2 Transmission Tune for Audi B9/B9.5 2.9T RS5 & RS4LEADING FEATURES Optimized shift points for the fastest acceleration Shift points for HPFP and TrueFlex ethanol files Enables launch control in all drive modes Includes user adjustable launch control settings Lightning fast shift speed 7th and 8th gear enabled in sport mode Enables downshifting into 1st gear without full stop Refined drive for the automotive enthusiast Reduces time for double downshifting gears Line pressure increased to protect
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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 ★★★★★
Based on 834 reviews
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Verified Purchase
hsofstuartltd
Lake Worth, US
★★★★★ 5
Great socks!
Size: Medium, Color: Black
I love these socks. Very soft and comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2026
S
Verified Purchase
Sallie Miller
Boise, US
★★★★★ 5
Good socks
Size: Medium, Color: Black
Socks wear reasonably well. They are comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026
J
Verified Purchase
Joey
Port Orchard, US
★★★★★ 5
Very comfy
Size: X-Large, Color: White
I'm a size US Mens 14 with huge calves. Finding comfortable crew socks can be somewhat difficult. These are extremely comfortable, very stretchy and soft. Very worth the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 4, 2025
S
Verified Purchase
SG
Belleville, US
★★★★★ 5
I use these exclusively for when I'm hiking, cycling and walking ( exercising )
Size: X-Large, Color: Black
5.7.2019 Update: I have probably five packs of 3 of these socks. Can't explain it but recent pairs I've been using have lasted longer than previous two packs ( 6 socks )... So I'm going to get some more... They are my #1 go to sock for cycling, hiking, climbing, walking ( serious, training, speed, distance )... 10.30.19: I use these exclusively for when I'm hiking, cycling anqd walking ( exeqrcising )... They are light, comfortable, keep feet dry, cool & comfortable... They don't shift around on feet. They stay put once put on and running, climbing or cycling shoes are put on and laced up or ratched... I do a lot of hill climbing and also use on terrain where there's lots of long periods ( hours ) going up & hours going down... They don't appear to be very durable, get holes in toe or holes in heels, but 3 pack is relatively inexpensive so I continue to buy them. I do not use them for everyday casual wear because they would wear out very quickly compared to other similar sockets...
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Reviewed in the United States on October 30, 2018
C
Verified Purchase
Chris
Chelsea, US
★★★★★ 4
These socks are just OK. One arrived with a ...
These socks are just OK. One arrived with a hole (easily sewn up, but kind of bummed about that). I prefer the Under Armour Resistor socks - they have support built into the socks that you actually can feel, and they were same price for 6 pairs!
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Reviewed in the United States on March 2, 2017

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