Engine

Cummins QSX All years 350 14.95L 352hp (259kW) 1607Nm remap

Standard this engine makes 352hp and 1607Nm. Our Stage 1 file takes it to 430hp and 1942Nm.

+78horsepower
+335newton metres
1stage available

Where the power arrives

Both curves scaled from the manufacturer figures, on the Stage 1 file.

Power before and after
011623234846401,5002,5003,5004,500 RPM 011623234846402,0003,5005,000hp RPM
  • Standard 352hp
  • Remapped 430hp
Torque before and after
052410491573209701,5002,5003,5004,500 RPM 052410491573209702,0003,5005,000Nm RPM
  • Standard 1607Nm
  • Remapped 1942Nm

Stages for this engine

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

Every figure for the 350 14.95L 352hp (259kW) 1607Nm

FilePowerGainTorqueGainPrice
Standard352hpn/a1607Nmn/an/a
Stage 1430hpup 781942Nmup 335ask us

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

Remapping the 350 14.95L 352hp (259kW) 1607Nm

The Cummins QSX All years 350 14.95L 352hp (259kW) 1607Nm 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 QSX range, or everything we do for Cummins.

Other engines on this QSX

All years cars.

Book your QSX

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.

Call 0121 238 8663 Ask a question