2014-Present JCB Wheel Loader Reflash
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2014+ JCB Wheel Loader EGR, DPF & DEF Remote Tune
From the 427 up to the 490, JCB’s current wheel loaders run Cummins power: the QSB 6.7 in the mid-size and 457 models, and the X12 in the 490. Your loader stays on site with the ECM in place. We flash it remotely over TeamViewer, shutting off the EGR, DPF and DEF/SCR, with Stage 1 or Stage 2 available for more power. We ship all across the US and Canada.
Stage 1 vs Stage 2 horsepower
Each percentage is taken from the rating on your Cummins data plate, so a 437 and a 490 both gain in proportion to their own output.
What you need
Send a sharp photo of the Cummins plate on the engine. It confirms your engine model and rating, and on a 457 it tells us whether you have a Cummins or an earlier MTU.
Email data plate photoRemote tune process
JCB wheel loaders we tune
2014 and newer JCB wheel loaders with Cummins engines.
Earlier 457 loaders with an MTU engine are not covered here. Email the data plate if you are unsure which engine you have.
Why delete the EGR, DPF and DEF on a JCB wheel loader?
Exhaust gas recirculation
Loader work is a constant swing between idle and full load, and every cycle sends recirculated exhaust through the cooler and into the intake. Over a season that leaves the valve gummed with carbon and the cooler at risk of plugging or leaking coolant. Switching the EGR off keeps the Cummins breathing clean charge air.
Diesel particulate filter
A loader waiting on the next truck idles with cool exhaust, and that is when soot stacks up in the filter fastest. The result is frequent regens that slow the bucket or stop the machine, and eventually a filter that has to be pulled and cleaned. With the DPF shut off, those interruptions are gone.
Diesel exhaust fluid / SCR
A busy 437 or 490 goes through DEF quickly, and the system depends on a pump, heated lines and NOx sensors that all have to keep working. Dust in the fluid, a cold snap or one failing sensor can put the loader into derate with a line of trucks waiting. Turning the SCR off takes the fluid and those faults out of the picture.
Frequently asked questions
Q1Does the ECM have to come out of the loader?+
No. The engine module stays where it is. You plug a diagnostic adapter into the loader, start TeamViewer on a Windows laptop, and our tuner reads and writes the ECM from our shop.
Q2Why do you ask for the engine data plate first?+
JCB fitted the QSB 6.7 and X12 at several power ratings, and some 457 loaders were built with an MTU engine instead. The serial number and rating on the Cummins plate let us confirm your loader and have the right file waiting when the session starts.
Q3Which adapter works for the session?+
A Nexiq USB-Link or DPA5 will do the job, so pick No Tool at checkout if you already have one. If not, choose Tooling Required and we send an adapter with your order.
Q4Can the VGT be set up for a fixed turbo?+
Yes. We can lock the variable geometry turbo in one position so a sticking actuator no longer causes trouble, or write the file for a swap to a fixed geometry turbo. It can be ordered alone or with Stage 1 or Stage 2.
Q5Will a power tune increase fuel use?+
In normal loading, not by much. The file adds fuel evenly through the rev range, so the Cummins reaches the torque it needs at a lighter throttle. Consumption goes up only when you use the extra power for harder digging or steeper ramps.
Q6Disclaimer+
For off-road equipment only. Not for machines registered for highway use. Know your state or provincial laws before you buy.
Why Reimer Tuning
We have tuned Cummins-powered equipment since 2014 from our Canadian shop. Each JCB loader file is written for the engine on your data plate, flashed live by one of our tuners and covered by a 1 year software warranty.
Emailing us? Attach a photo of your engine data plate.
Off-road use only. Not for machines registered for highway use. Buyers are responsible for knowing their provincial or state legislation. All sales final.

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$1,850.00