Stage 1

Cummins QSX All years 375 14.95L 383hp (282kW) 1990Nm Stage 1

Takes the 375 14.95L 383hp (282kW) 1990Nm from 383hp to 460hp, and 1990Nm to 1980Nm.

+77horsepower
+-10newton metres

Where the gain arrives

Scaled from the manufacturer curve for this engine.

Power before and after
012424837349701,5002,5003,5004,500 RPM 012424837349702,0003,5005,000hp RPM
  • Standard 383hp
  • Remapped 460hp
Torque before and after
053710751612214901,5002,5003,5004,500 RPM 053710751612214902,0003,5005,000Nm RPM
  • Standard 1990Nm
  • Remapped 1980Nm

Standard against Stage 1

MeasureStandardAfterGain
Power383hp460hpup 77
Torque1990Nm1980Nmup -10

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 375 14.95L 383hp (282kW) 1990Nm, 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 375 14.95L 383hp (282kW) 1990Nm, and we check the car over before writing to it.

See the full 375 14.95L 383hp (282kW) 1990Nm page for every file and figure, the other engines on this QSX, or all Cummins remapping.

Book your QSX 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.