Audi RS4 B7 2004 to 2008 RS4 4.2 V8 remap
Standard this engine makes 420hp and 430Nm. Our STAGE 2 file takes it to 455hp and 470Nm.
Where the power arrives
Power and torque through the rev range, on the STAGE 2 file.
- Standard 420hp
- Remapped 455hp
- Standard 430Nm
- Remapped 470Nm
Stages for this engine
Stage 1 needs nothing fitted. Anything above assumes the supporting hardware is on the car already.
Remapping the RS4 4.2 V8
The Audi RS4 B7 2004 to 2008 RS4 4.2 V8 runs a factory calibration built to cope with poor fuel, skipped servicing and hot countries. We rewrite the fuelling, boost and timing for this engine on this car, then test it before you get it back. The original file is kept, so it can go back to standard whenever you want.
On the petrol side the difference shows in throttle response and in how hard it pulls through the top half of the rev range. It feels sharper off idle and keeps going where it used to flatten out.
Figures on this page are for a standard car in good health. We read the fault codes and check the basics first, and if something needs attention we will tell you before we write anything. Have a look at the other engines on the B7 2004 to 2008, the full RS4 range, or everything we do for Audi.
Similar power, other makes
Cars running about the same standard output, for comparison.
Other RS4 generations
Book your RS4
We write and test every file at our Aston workshop, on our own rolling road. Ring us with your reg and we will tell you what your car should make before you commit to anything.