Stage 1

Caterpillar C13 All years 12.5 437hp (321kW) 2237Nm Stage 1

Takes the 12.5 437hp (321kW) 2237Nm from 437hp to 505hp, and 2237Nm to 2500Nm.

+68horsepower
+263newton metres

Where the gain arrives

Scaled from the manufacturer curve for this engine.

Power before and after
013627340954501,2001,6002,0002,400 RPM 013627340954501,4002,0002,600hp RPM
  • Standard 437hp
  • Remapped 505hp
Torque before and after
067513502025270001,2001,6002,0002,400 RPM 067513502025270001,4002,0002,600Nm RPM
  • Standard 2237Nm
  • Remapped 2500Nm

Standard against Stage 1

MeasureStandardAfterGain
Power437hp505hpup 68
Torque2237Nm2500Nmup 263

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 12.5 437hp (321kW) 2237Nm, 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 12.5 437hp (321kW) 2237Nm, and we check the car over before writing to it.

See the full 12.5 437hp (321kW) 2237Nm page for every file and figure, the other engines on this C13, or all Caterpillar remapping.

Book your C13 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.