2014-Present John Deere Motor Grader Reflash

From $1,850.00
Reflash Options
Horsepower Tunes
Tooling
$1,850.00
$1,850.00
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2014+ John Deere Motor Grader EGR, DPF & DEF Delete Tune

Final Tier 4 John Deere G and GP graders, from the 620G up to the 872GP, run EGR, a regenerating DPF and DEF into the SCR. Ship us the engine control module and we bench flash all three off, with an optional Stage 1 file for better fuel economy. Your ECM ships back the next business day. We ship all across the US and Canada.

Fits620G – 872GP graders
SystemsEGR · DPF · DEF/SCR
EnginesPowerTech 6.8 · 9.0L
MethodBench flash · ECM only
TurnaroundNext business day
PowerStage 1

Stage 1 horsepower

Stock215HP
Factory rating
Stage 1237HP
+22 hp · +10%

Shown on a 672G rated at 215 hp. Every other grader on this page gains about the same 10% over its own rating. Stage 1 is tuned for fuel economy with extra low-end torque, so the moldboard keeps a full cut without the engine dragging down.

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Kit includes

01ECM emissions programming
02Stage 1 power file (if selected)
031 year software warranty

Mail-in process

STEP 01OrderAdd Stage 1 if you want it. Shipping and customs details follow by email.
STEP 02Pull the ECMUnplug the engine control module and send it to our shop.
STEP 03Bench flashWe flash it and ship it back the next business day.
STEP 04ReinstallReinstall the ECM, drain the DEF tank and get back to grading.

John Deere motor graders we bench flash

2014 and newer Final Tier 4 G-series graders with DEF. GP models carry Grade Pro controls and use the same file.

620 / 622PowerTech 6.8L
620G620GP622G622GP
670 / 672PowerTech 6.8L
670G670GP672G672GP
770 / 772PowerTech 6.8L
770G770GP772G772GP
870 / 872PowerTech 9.0L
870G870GP872G872GP

Grader 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 motor grader?

EGR

Exhaust gas recirculation

Finish grading and long roading runs keep a grader at steady, moderate load for hours, the exact range where the PowerTech recirculates the most exhaust. That soot coats the EGR valve, cooler and intake with a hard crust, and a valve that starts to stick brings hesitation, fault codes and lost pull at the blade. Switching the EGR off feeds the engine clean intake air only.

DPF

Diesel particulate filter

Light passes and travel between jobs rarely build enough exhaust heat to burn soot off on the move, so the filter loads and calls for parked regens. On a road crew that means stopping a machine that should be cutting, and an ash-packed filter eventually forces a derate and a costly clean or replacement. Removing the DPF from the file ends the regen stops.

DEF

Diesel exhaust fluid & SCR

Graders often sit outside all winter on snow routes and remote sites, which is hard on a fluid that is mostly water. Frozen DEF can split lines and damage the pump, and failing NOx sensors or heaters on the SCR trigger a derate. With DEF switched off, drain the tank and flush the lines with clean water so nothing crystallizes inside.

Frequently asked questions

Q1Which module do I send in?+

Only the engine control module. The EGR, DPF and DEF changes all live in the ECM file, so the aftertreatment module stays on the grader.

Q2How long will my grader be down?+

Shipping time each way plus one business day in our shop. We flash the ECM the next business day after it arrives and send it straight back.

Q3Do GP models use the same tune?+

Yes. GP graders add Grade Pro controls but share the engine and ECM with the matching G model, so they take the same file.

Q4Does Stage 1 use more fuel?+

Usually it saves fuel. Stage 1 brings torque in sooner, so the engine holds the cut with less throttle. Fuel use only rises if you use the extra power to move more material.

Q5Can a John Deere update remove the tune?+

Yes. A dealer reflash or over-the-air update can overwrite our file. Read our OTA statement before connecting the grader 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

We have been writing diesel engine software for construction and ag equipment out of our Canadian shop since 2014. Every John Deere grader ECM is flashed by our own team, checked on the bench before it ships and covered 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.

2014-Present John Deere Motor Grader Reflash

$1,850.00

Questions about this product?
Talk to a member of our team

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