



Unitronic Stage 3 ECU Performance Tune C8 RS6 / RS7 4.0TFSI
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Unitronic Stage 3 ECU Performance Tune C8 RS6 / RS7 4.0TFSIStage 3 ECU TCU Performance Software for the C8 RS6 and RS7 equipped with the 4. 0TFSI EA825 (DJPB) engine and TheTurboEngineers 1020 Hybrid Turbochargers. With testing and validations completed, power outputs are increased by up to +336HP +236LB FT with Unitronic Stage 3 (93octane 98ron) Performance Software for a maximum of 936HP 830LB FT when combined with Unitronic's Stage 3 AL952 TCU Performance Software for seamless operation. These software
Quick Dispatch:
Your Unitronic Stage 3 ECU Performance Tune C8 RS6 / RS7 4.0TFSI orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your Unitronic Stage 3 ECU Performance Tune C8 RS6 / RS7 4.0TFSI ships.
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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.
- To process your return/exchange, please contact us at [email protected]
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★★★★★ 3
Roller brush isn’t exact fit
Color: X10 Parts-14Pcs
Roller isn’t a perfect fit and makes a loud noise when in use. Other accessories work well.
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Reviewed in the United States on January 22, 2026
★★★★★ 5
Good mix of accessories for my X10
Color: X10 Parts-14Pcs
Items all worked well with my X10
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Worked Perfectly
Color: X10 Parts-14Pcs
I didn’t realize the maintenance I had to do with robot vacuums but this was the best price for parts needed! Everything fit as it should.
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Reviewed in the United States on May 18, 2025
★★★★★ 4
The bracket that covers the roller brush is not part of the kit.
Color: X10 Parts-14Pcs
I guess if I had paid more attention, I would have noticed no bracket in the kit. My fault. I had to order a different roller brush that had the bracket. All good items, just more that I need at the moment. It would be nice to have the bracket included.
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Reviewed in the United States on December 27, 2024
★★★★★ 5
Amazing service
Amazing service. Very easy to use. Will purchase again.
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Reviewed in the United States on May 6, 2026