Caterpillar C9 All years 9.3 DPF 340hp (250kW) 1559Nm remap
Standard this engine makes 340hp and 1559Nm. Our Stage 1 file takes it to 390hp and 1790Nm.
Where the power arrives
Both curves scaled from the manufacturer figures, on the Stage 1 file.
- Standard 340hp
- Remapped 390hp
- Standard 1559Nm
- Remapped 1790Nm
Stages for this engine
Stage 1 needs nothing fitted. Anything above assumes the supporting hardware is on the car already.
Every figure for the 9.3 DPF 340hp (250kW) 1559Nm
| File | Power | Gain | Torque | Gain | Price |
|---|---|---|---|---|---|
| Standard | 340hp | n/a | 1559Nm | n/a | n/a |
| Stage 1 | 390hp | up 50 | 1790Nm | up 231 | ask us |
Economy files show no new power figure because they are written for torque and drivability rather than peak output.
Remapping the 9.3 DPF 340hp (250kW) 1559Nm
The Caterpillar C9 All years 9.3 DPF 340hp (250kW) 1559Nm 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 All years, the full C9 range, or everything we do for Caterpillar.
Other engines on this C9
All years cars.
- 8.8 Acert 219hp (161kW) 1496Nm219hp standard
- 9.3 DPF 290hp (213kW) 1206Nm290hp standard
- 8.8 Acert 340hp (250kW) 1428Nm340hp standard
- 9.3 DPF 355hp (261kW) 1695Nm355hp standard
- 8.8 Acert 356hp (262kW) 1562Nm356hp standard
- 9.3 DPF 370hp (272kW) 1695Nm370hp standard
- 9.3 DPF 409hp (301kW) 1695Nm409hp standard
- 9.3 DPF 431hp (317kW) 1695Nm431hp standard
Book your C9
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.