Diesel

Audi A8 D4 2010 onwards 4.2 V8 TDI remap

Standard this engine makes 385hp and 850Nm. Our STAGE 1 file takes it to 450hp and 950Nm.

+65horsepower

+100newton metres

2stages available

Where the power arrives

Power and torque through the rev range, on the STAGE 1 file.

Power before and after

Standard 385hp
Remapped 450hp

Torque before and after

Standard 850Nm
Remapped 950Nm

Stages for this engine

Stage 1 needs nothing fitted. Anything above assumes the supporting hardware is on the car already.

Every figure for the 4.2 V8 TDI

File	Power	Gain	Torque	Gain	Price
Standard	385hp	n/a	850Nm	n/a	n/a
ECO	n/a	n/a	950Nm	up 100	£790
STAGE 1	450hp	up 65	950Nm	up 100	£890

Economy files show no new power figure because they are written for torque and drivability rather than peak output.

Remapping the 4.2 V8 TDI

The Audi A8 D4 2010 onwards 4.2 V8 TDI 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.

Diesels like this one gain most through the middle of the rev range, which is where you actually drive. It pulls from lower down, holds a gear on a hill, and needs fewer downshifts to overtake. Drive it the same way afterwards and the economy usually improves a little.

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 D4 2010 onwards, the full A8 range, or everything we do for Audi.

Other engines on this A8

D4 2010 onwards cars.

Similar power, other makes

Cars running about the same standard output, for comparison.

Other A8 generations

Book your A8

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.

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