Bosch MED9 Tuning Software
The Bosch MED9 is the FSI-era petrol ECU on VAG vehicles 2003-2014 — Golf V/VI GTI, Audi S3 8P, RS3 8P, RS4 B7. DaVinci Deluxe supports MED9.1, MED9.5, MED9.5.10 with full Stage 1/2 + pop & bang.
About Bosch MED9
Bosch MED9 family includes MED9.1, MED9.1.1, MED9.5, MED9.5.10. Used on 2.0 TFSI EA113, 4.2 FSI V8 (RS4 B7), 2.5 TFSI 5-cyl (RS3 8P).
Vehicles using Bosch MED9
What you can do with Bosch MED9
Stage 1 / Stage 2 / Stage 3
2.0 TFSI: +30/+60/+100 HP depending on stage
Pop & bang / popcorn
Classic FSI overrun crackle
Hardcut limiter
Two-step launch limiter
Big-turbo MAP scaling
For Frankenturbo / GT2871 / K04+ builds
Read / write protocols supported
- 📡 OBD via any flasher
- 📡 BDM available for early MED9.1
DaVinci Deluxe is the ECU file editor — pair it with any modern flasher (KESS3, Autotuner, FoxFlash, MagicMotorsport, ATAG, etc.).
Frequently asked questions
2.0 TFSI K04+ tuning — supported?
Yes. K04+ / Frankenturbo / GTX hybrid maps with proper MAP scaling and ignition retard tables.
RS3 8P 2.5 TFSI 5-cyl — Stage 2?
Yes. Stage 2 with downpipe + intake reaches ~440 HP on stock turbo.
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