2014-Present John Deere 3R / 4R Series Reflash

$2,495.00
Reflash Options
Tooling
$2,495.00
$2,495.00
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2014–Present John Deere 3R & 4R Series DPF & EGR Delete Tune

Compact tractors like the 4066R spend their days on loader work, mowing and snow clearing, which is light, stop-and-go running that fills a particulate filter fast. Mail us the Yanmar engine control module and we bench flash it with EGR and DPF switched off, then ship it back the next business day. We ship all across the US and Canada.

FitsJD 3R · 4R, 2014+
ControllersYanmar engine ECM
SystemsEGR · DPF
MethodMail-in ECM bench flash
TurnaroundNext business day
 
BEFORE YOU PULL THE ECMEmail us the tractor’s serial numberThe serial plate tells us the model year and Yanmar engine in your 3R or 4R, so the right software is ready to load when your ECM reaches our shop.
Email serial number

What’s included

01ECM emissions programming
021 year software warranty

Mail-in process

STEP 01OrderYou get our shipping address and customs forms by email.
STEP 02Remove & shipUnplug the engine ECM from the tractor and ship it to us.
STEP 03Bench flashWe flash it and ship it back the next business day.
STEP 04ReinstallReinstall the ECM, then hollow or pipe the DPF.
OVER-THE-AIR UPDATESRead our position on John Deere OTA rewritesRead →

After the tune

EXHAUSTHollow out or straight pipe the DPFOnce regens are turned off, hollow out the DPF canister or swap it for a straight pipe. 3R and 4R tractors have no DEF or SCR, so nothing else in the exhaust changes.
EGRShut off in the softwareThe tune closes the EGR valve and keeps it closed, so no exhaust is routed back into the intake. Nothing has to be unbolted or replaced.

3R and 4R tractors we bench flash

Final Tier 4 John Deere 3R and 4R compact utility tractors, 2014 to present.

3RCompact utility · FT4
3033R3039R3046R
4RCompact utility · FT4
4044R4052R4066R4075R

Tractor not listed? Email us the serial number and we will check whether we can flash it.

Why delete the DPF and EGR on a John Deere 3R or 4R?

DPF

Diesel particulate filter

A 3R or 4R rarely works hard for long. Moving bales, clearing snow, mowing and short loader cycles keep the small Yanmar at low load, so the exhaust never gets hot enough to clean the filter on its own. The tractor then asks for parked regens or drops power, and a plugged filter on a compact is an expensive part for the size of the machine. Gutting or piping the DPF ends regens for good.

EGR

Exhaust gas recirculation

Yanmar uses EGR to bring NOx down by sending some exhaust back into the intake. On a compact that idles and runs light most of the day, that soot settles on the valve and in the intake, and a sticky EGR valve brings on rough running, smoke and warning lights. Our tune shuts the EGR off in the ECM, so clean air goes in and the valve stops being a problem.

Frequently asked questions

Q1Which module do I ship to you?+

Only the Yanmar engine ECM. It runs the EGR and DPF on 3R and 4R tractors, so the other controllers stay on the tractor.

Q2How long is the turnaround?+

We flash your ECM and ship it back the next business day after it arrives, so the tractor is only down for shipping time each way.

Q3What do I do with the DPF afterward?+

Hollow out the canister or put a straight pipe in its place once the ECM is flashed. There is no DEF or SCR on these tractors, so that is the only exhaust work.

Q4Will a John Deere update remove the tune?+

It can. A dealer software update or reflash may overwrite our file. Read our OTA statement above before you connect the tractor to dealer service tools.

Q5Disclaimer+

For off-road agricultural use only, not for tractors registered for road use. Check your state or provincial laws before you order.

Why Reimer Tuning

We are a Canadian-owned shop that has tuned farm equipment since 2014. Our own technicians flash every 3R and 4R ECM in house, each tune carries a 1 year software warranty, and real people answer the phone when you call.

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 3R / 4R Series Reflash

$2,495.00

Questions about this product?
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