Stage 1

JCB Fastrac All years 8310 309hp (227kW) 1310Nm Stage 1

Takes the 8310 309hp (227kW) 1310Nm from 309hp to 364hp, and 1310Nm to 1588Nm.

+55horsepower
+278newton metres

Where the gain arrives

Scaled from the manufacturer curve for this engine.

Power before and after
09819729539301,2001,6002,0002,400 RPM 09819729539301,4002,0002,600hp RPM
  • Standard 309hp
  • Remapped 364hp
Torque before and after
04298581286171501,2001,6002,0002,400 RPM 04298581286171501,4002,0002,600Nm RPM
  • Standard 1310Nm
  • Remapped 1588Nm

Standard against Stage 1

MeasureStandardAfterGain
Power309hp364hpup 55
Torque1310Nm1588Nmup 278

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 8310 309hp (227kW) 1310Nm, 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 8310 309hp (227kW) 1310Nm, and we check the car over before writing to it.

See the full 8310 309hp (227kW) 1310Nm page for every file and figure, the other engines on this Fastrac, or all JCB remapping.

Book your Fastrac 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.