2014-Present John Deere Wheel Loader Reflash
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2014+ John Deere Wheel Loader EGR, DPF & DEF Delete Tune
Final Tier 4 John Deere K-series loaders, from the 444K up to the 844K-II, carry EGR, a DPF that has to regen and DEF dosing into the SCR. Mail us the engine control module and we bench flash all three off, plus an optional Stage 1 file for more torque in the pile. It ships back the next business day. We ship all across the US and Canada.
Stage 1 horsepower
Shown on a 644K rated at 225 hp. Every other loader on this page gains about the same 10% over its own rating. Stage 1 adds torque low in the rev range, so the bucket keeps crowding into a face without the engine pulling down.
Kit includes
Mail-in process
John Deere wheel loaders we bench flash
2014 and newer Final Tier 4 K-series and K-II loaders with DEF, grouped by size.
Loader not listed, or not sure which year yours is? Email us the machine serial number and we will confirm the fit before you order.
Why delete the EGR, DPF and DEF on a John Deere wheel loader?
Exhaust gas recirculation
A loader spends its day in short cycles, idling at the truck and then loading hard into the pile. The PowerTech sends exhaust back through the EGR during those lighter moments, and the soot bakes onto the valve and cooler. Over time the valve sticks, response at the pile goes soft and fault codes start stacking up. Turning the EGR off gives the engine clean air only.
Diesel particulate filter
Yard and stockpile work is mostly low-speed, so exhaust rarely runs hot long enough to burn soot off on its own. The filter loads, the machine asks for a parked regen in the middle of a shift, and a canister packed with ash ends in a derate and a costly clean. Pulling the DPF from the file ends the regen stops.
Diesel exhaust fluid & SCR
A loader parked at a gravel pit or snow yard over winter is hard on a fluid that is mostly water. Frozen DEF splits lines and damages the dosing pump, and failed NOx sensors or SCR heaters put the machine into derate. Once DEF is off, drain the tank and rinse the lines with clean water so nothing crystallizes inside.
Frequently asked questions
Q1Which module do I send in?+
Just the engine control module. We write the EGR, DPF and DEF changes into the ECM file, so the aftertreatment module stays on the loader.
Q2How long will my loader be down?+
Plan for shipping both ways plus one business day here. The ECM is flashed the next business day after it reaches us and goes straight back out.
Q3Are K-II models covered the same way?+
Yes. The 744K-II, 824K-II and 844K-II are bench flashed the same way as the earlier K loaders. Send us the serial number if you want us to confirm before ordering.
Q4Will Stage 1 use more fuel?+
Not for the same work. Torque comes in earlier, so the engine fills the bucket with less throttle. Fuel burn only climbs if you use the extra power to load faster.
Q5Can a John Deere update overwrite the tune?+
Yes. A dealer reflash or over-the-air update can replace our file. Read our OTA statement before connecting the loader to JDLink or dealer tools.
Q6Disclaimer+
For off-road equipment only. Not for machines registered for highway use. Check your state or provincial laws before you buy.
Why Reimer Tuning
Since 2014 our team in Canada has built engine software for loaders, tractors and other heavy diesels. Each John Deere loader ECM we receive is programmed in house, tested on the bench before it ships and backed by a 1 year software warranty.
Emailing us? Include your model and serial number.
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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$2,995.00