Stage 1

Caterpillar C9 All years 9.3 DPF 370hp (272kW) 1695Nm Stage 1

Takes the 9.3 DPF 370hp (272kW) 1695Nm from 370hp to 420hp, and 1695Nm to 1990Nm.

+50horsepower
+295newton metres

Where the gain arrives

Scaled from the manufacturer curve for this engine.

Power before and after
011322734045402,0004,0006,0008,000 RPM 011322734045403,0006,0009,000hp RPM
  • Standard 370hp
  • Remapped 420hp
Torque before and after
053710751612214902,0004,0006,0008,000 RPM 053710751612214903,0006,0009,000Nm RPM
  • Standard 1695Nm
  • Remapped 1990Nm

Standard against Stage 1

MeasureStandardAfterGain
Power370hp420hpup 50
Torque1695Nm1990Nmup 295

What Stage 1 involves

Stage 1 is for a standard car with nothing fitted. We read the original file off the ECU, write a calibration developed for the 9.3 DPF 370hp (272kW) 1695Nm, then road or rolling road test it before handing the car back. Nothing is added and nothing is removed, so it looks and services exactly as it did.

It takes most of a day. We keep your original file, so it can go back to standard at any point. Figures here are for a healthy 9.3 DPF 370hp (272kW) 1695Nm, and we check the car over before writing to it.

See the full 9.3 DPF 370hp (272kW) 1695Nm page for every file and figure, the other engines on this C9, or all Caterpillar remapping.

Book your C9 Stage 1

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.