Audi RS7 C8 with MuchBoost Prototype 900HP EA825 Turbos – 881 HP on 98 Fuel
A Stunning Build with Exceptional Performance
The Audi RS7 C8 4.0 TFSI is already an incredible machine in its stock form – but this yellow example takes things to an entirely other level. It looks spectacular, and thanks to a year-long performance journey, it now performs even better than it looks.
The owner put in immense effort to bring this build to life, and the final results prove it was absolutely worth it.
Complete Hardware Setup
To unlock the full potential of the EA825 platform, the car received a carefully selected combination of supporting modifications:
- Larger intakes
- Larger coolers
- Full custom exhaust by MGmotorsport
- MuchBoost prototype 900HP EA825 turbochargers
- 4-bar MAP sensor
Every component was chosen with a clear goal: maximize efficiency, power, and reliability while retaining fast spool characteristics.
Prototype Turbos Designed for Quick Spool
Our prototype 900 HP EA825 turbochargers were developed with an emphasis on fast spool – not just peak power.
Despite their significantly larger airflow capability, the spool increase is only 400 RPM compared to stock turbos.
Yet the power gain is massive: nearly 50% more output with a minimal sacrifice in responsiveness.
This is the engineering philosophy behind every MuchBoost turbo – balanced, usable power that enhances the real driving experience.
Dyno Results on Stock 98 Fuel
What makes this build even more impressive is that all testing was done on:
- Standard 98 pump fuel
- No water-meth injection
- No additional fuel systems
The final figures speak for themselves:
- 881 HP
- 1022 Nm
These results demonstrate the efficiency of the prototype turbo system and the quality of the overall build.
A Year of Work – and a Customer Who Can’t Stop Smiling
This project took almost a full year from concept to completion, with countless hours spent perfecting hardware, tuning, and calibration.
Since picking up the car, the customer hasn’t stopped smiling – a testament to how satisfying the final result truly is.
Tuning & Build Partners
This RS7 C8 wouldn’t be possible without top-tier specialists:
- ECU/TCU tuning: DIGITUN
- Hardware installation & fabrication: Frog Racing
Their expertise ensured this ambitious build reached its full potential.
Full product details: https://muchboost.com/product/ea825-4-0tfsi-hybrid-turbo-upgrade
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