John Deere Industrial Engine Reflash
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John Deere PowerTech Industrial Engine EGR, DPF & DEF Delete Tune
John Deere’s 4.5L, 6.8L, 9.0L and 13.5L PowerTech engines run gensets, water pumps, Vermeer drills, Bandit chippers and a long list of other equipment, often for hours at a steady load or parked on standby. That duty cycle is hard on emissions hardware. We tune Tier 3, Interim Tier 4 and Final Tier 4 versions, on site with our Reflash Master handheld or by mail-in bench flash, with optional Stage 1 power. We ship all across the US and Canada.
Engines we tune
PowerTech 4.5LPowerTech 6.8LPowerTech 9.0LPowerTech 13.5L
Fits4045 · 6068 · 6090 · 6135
SystemsEGR · DPF · DEF/SCR
TierTier 3 · Tier 4i · Tier 4F
MethodHandheld or bench flash
Turnaround2 hrs · bench next day
PowerStage 1 · +10%
Stage 1 · PowerTech industrial
StockStock
Factory rating
Stage 1+10%
Over factory rating
PowerTech industrial engines ship in many power ratings, so Stage 1 is shown as a gain over whatever rating your engine carries. The extra torque lets a chipper or drill hold speed as the load climbs.
ENGINE IN DERATE?Send in the ECM if a regen won’t clear the sootStandby gensets and idling pumps are the usual culprits. If the DPF is loaded and the engine is stuck in derate, mail us the ECM. We write the new file, clear the soot count and send it back the next business day.
Ask which option fits
What’s included
01ECM emissions programming (EGR, DPF and DEF to suit your tier)
02Stage 1 horsepower (optional)
03EGR block-off plate
041 year software warranty
05Reflash Master handheld, USB and diagnostic cables (handheld option)
Handheld process
STEP 01OrderMost handheld kits leave our shop the next business day.
STEP 02ReadPlug into the engine harness and save the factory ECM file.
STEP 03SendEmail the read to us. The tuned file returns in about 2 hours.
STEP 04WriteLoad the file, fit the EGR plate and finish the exhaust work.
Bench flash process
STEP 01OrderWe email shipping and customs instructions.
STEP 02ShipRemove the ECM from the engine and mail it to us.
STEP 03FlashWe load the file, clear the soot and return it next business day.
STEP 04InstallReconnect the ECM, fit the EGR plate and finish the exhaust work.
After the tune
TIER 3EGR onlyNo DPF or DEF on these engines. The file shuts the EGR and the plate blocks the port. The exhaust stays as it is.
TIER 4iEGR and DPFRegens are switched off, so the DPF can be gutted or replaced with a straight pipe. There is no DEF system to deal with.
TIER 4FEGR, DPF and DEFDEF dosing and SCR monitoring are turned off too. Gut or pipe the DPF and SCR, and the DEF tank no longer needs filling.
Common applications
Any equipment running a PowerTech 4.5L, 6.8L, 9.0L or 13.5L industrial engine can be tuned.
Generator setsWater pumpsVermeer drillsBandit chippersAnd more
Not sure which engine you have? Email us a photo of the engine tag with the serial number and we will confirm your engine is supported.
Why delete the EGR, DPF and DEF on a John Deere industrial engine?
DPF
Diesel particulate filter
A standby generator or a pump on light load rarely runs hot enough to burn soot off on its own. The filter loads up, the engine calls for regens it can’t complete, and eventually it derates when you need it most. A plugged or ash-loaded DPF can cost more to replace than the tune. Gutting or piping it ends the cycle.
EGR
Exhaust gas recirculation
On Tier 3 and Tier 4 PowerTech engines, the EGR system sends cooled exhaust back into the intake. Over thousands of hours that gas cakes the valve, cooler and intake with carbon, and a cracked cooler can put coolant into the engine. Closing it off in the file and fitting the plate keeps clean air going in.
DEF
Diesel exhaust fluid
Final Tier 4 engines need DEF on hand at every remote site, and the fluid crystallises in pumps and lines when a unit sits. A faulty sensor or dosing module can drop the engine into low power. With DEF turned off in the file there is no fluid to haul and no SCR faults to chase.
Frequently asked questions
Q1Should I use the handheld or send in the ECM?+
Most owners go with the Reflash Master handheld because the engine never has to leave the job: a genset on a pad or a pump at the pond gets tuned where it sits. Mail us the ECM instead if the unit is derated on soot it can no longer clear, or if the handheld can’t complete the write.
Q2How quickly will my engine be back to work?+
With the handheld, email us the stock read and the tuned file comes back in roughly 2 hours. A mailed-in ECM is flashed and on its way back to you the next business day after we receive it, plus shipping time.
Q3How do I tell if my engine is Tier 3, Tier 4i or Tier 4F?+
Look at the exhaust. An engine with no DPF and no DEF tank is Tier 3. A DPF without a DEF tank means Interim Tier 4, and a DPF plus DEF tank and SCR means Final Tier 4. The emissions label and engine serial plate on the block will confirm it, so send us both if you are unsure.
Q4Will the tune change my generator’s rated speed?+
No. The rated rpm your equipment maker set stays where it is, so generator frequency and pump speed don’t move. The file changes emissions control and, with Stage 1, adds fuel for more pull at that same speed.
Q5What does Stage 1 add on an industrial PowerTech?+
Roughly 10% over the engine’s factory rating, whichever rating it carries. Chippers and drills hold speed better when the load spikes, and gensets and pumps work less hard at the same output.
Q6Can a dealer update erase the tune?+
Yes, a dealer reflash or software update can write over our file. Read our OTA statement before you hook the engine up to dealer service tools.
Q7Disclaimer+
For off-road use only. Not for equipment registered for highway use. Check your provincial or state laws before you order.
Why Reimer Tuning
We are a Canadian shop that has written diesel calibrations for off-road equipment since 2014. Every PowerTech industrial file is built by our own team, tested in house and backed by a 1 year software warranty, whether it goes out on a handheld or on a bench-flashed ECM.
Off-road use only. Not for equipment registered for highway use. Buyers are responsible for knowing their provincial or state legislation. All sales final.
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John Deere Industrial Engine Reflash
$1,895.00
