JCB Fastrac
Power
189 HP / 141 kW
Version
4190 - 6.6l - 189hp - tier4f
Live ECU tuning for the JCB Fastrac, with measured power and torque gains, a dyno preview, and the supported file options grouped into one focused page.
| Stock | Tuned | Gain | |
|---|---|---|---|
| Power (HP) | 189 | 220 | +31 (+16%) |
| Torque (Nm) | 850 | 1050 | +200 (+24%) |
Available tuning options
Performance 2
Tune
Towing | PowerVGT delete
Emissions & anti-pollution 4
DPF off We take no responsibility for legal actions as a result of disabling a DPF system, this may be illegal in your country. You must perform a forced regeneration or reset all DPF levels before reading the ECU. DPF must be removed after.
EGR off We take no responsibility for legal actions as a result of disabling a EGR system, this may be illegal in your country.
AdBlue / SCR off We take no responsibility for legal actions as a result of disabling a SCR / ADBLUE / DEF system, this may be illegal in your country.
DTC You must clear codes before writing tuned file.
Driveability & comfort 2
Speed limit raised We take no responsibility for legal actions as a result of a raised speed limiter, this may be illegal in your country.
Exhaust flap off
Services, files & hardware 2
Send us your ECU Includes standard bench fee processing for 1 ECU and NZ return freight. Include a send in ECU form fully filled out with your ECU.
Return file to original
Dyno chart
Original HP
Tuned HP
Original Torque
Tuned Torque
Original HP
Tuned HP
* This chart should be considered a visual representation only, actual values will vary.
Installation and process
Choose the tuning package that fits your goals, confirm the vehicle and ECU, and request your files. AltTune then guides the read, write, and verification steps for your selected vehicle — whether handled remotely with a supported flash tool or on the bench.
Support, safety, and trust
Vehicle condition, maintenance history, fuel quality, and intended use all affect results. We only publish gains we can support for the listed configuration, and we ask that you confirm suitability for your vehicle and application before ordering.
Frequently asked questions
01
Is the JCB Fastrac supported?
This page is generated for an active vehicle in the AltTune catalogue, so it represents a currently supported tuning entry. If your exact ECU differs, contact us to confirm before ordering.
02
What options are available for this vehicle?
The resolved options for this vehicle include Send us your ECU, Tune, DPF off, EGR off, AdBlue / SCR off, Return file to original. The exact list depends on the vehicle type, fuel, and supported protocols.
03
What gains can I expect?
This vehicle shows gains of up to +31 HP and +200 Nm over the factory figures. Real-world results vary with condition and fuel.
