Audi 4.2i V8 40v Tuning
Supported in 4 Audi models, 1997+.
Audi
6 supported 4.2i V8 40v applications
Models With the Audi 4.2i V8 40v
All Supported Audi 4.2i V8 40v Tunes
| Model | Years | Version | Stock power | Controller | Platform |
|---|---|---|---|---|---|
| A6 | 2004+ | C6 | 335 hp | ECU Bosch ME7.1.1 | AutoTuner |
| A6 | 1997+ | C5 | 300 hp | ECU Bosch ME7.1.1 | AutoTuner |
| A8 | 2003+ | D3 | 335 hp | ECU Bosch ME7.1.1 | AutoTuner |
| S4 | 2005+ | B7 | 344 hp | ECU Bosch ME7.1.1 | AutoTuner |
| S4 | 2003+ | B6 | 344 hp | ECU Bosch ME7.1.1 | AutoTuner |
| S6 | 1997+ | C5 | 340 hp | ECU Bosch ME7.1.1 | AutoTuner |
About Audi 4.2i V8 40v tuning
We tune the Audi 4.2i V8 40v in 6 applications across the A6, A8, S4, S6, from 1997+, in gasoline form, with stock outputs of 300-344 hp. Calibrations are written on AutoTuner for your exact hardware and fuel, then proven on our Dynojet 424xLC2 in Jenison, MI.
This engine runs on: Bosch ME7.1.1.
Don't See Your Vehicle?
These lists cover off-the-shelf tuning platforms. We also do standalone ECU installs and custom calibrations, so reach out and we'll tell you what's possible for your build. Compatibility data last updated 2026-09-24.