Unitronic Stage 2 ECU Performance Tune C8 RS6 / RS7 4.0TFSI

Unitronic Stage 2 ECU Performance Tune C8 RS6 / RS7 4.0TFSI

Marsoni

M251S

$765.00

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

Unitronic Stage 2 ECU Performance Tune C8 RS6 / RS7 4.0TFSIUnitronic Stage 2 : 819HP 760LB FT STOCK POWER: 621HP 627LB FT For Audi C8 RS7 Performance 4. 0 TFSI EA825 Change Vehicle Octane 93 Octane 98 Ron gas 91 Octane 95 Ron Gas HP +198 LB FT +133 Description Unitronic Stage 2 Performance software is precisely calibrated for use with 93 AKI 98 RON fuel. NOTE: An SFD SFD2 unlock may be required for some MY23+ models. Click HERE for more information or contact Unitronic to learn more today. Power figures may

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Reviewed in the United States on April 3, 2026

Verified Purchase

Dannette Steck

Fort Morgan, US

★★★★★ 3

Meh

On the fence if this has helped or not. Haven't really noticed anything and I've given it 2 months. Probably won't order again.

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Reviewed in the United States on March 21, 2026

Verified Purchase

Julie Henderson