2011-2014 Challenger MT Series Tractor Reflash

From $1,850.00
Reflash Options
$1,850.00
$1,850.00
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2011–2014 Challenger MT Series DEF Delete Tune

For the D-series Challenger row crop and track tractors built to Interim Tier 4. Plug the Reflash Master handheld into the cab diagnostic connector and install new engine software that shuts off DEF dosing and ends SCR derates. Pair it with a Stage 1 or Stage 2 calibration for extra drawbar and PTO pull. We ship all across the US and Canada.

FitsMT400D–MT700D, 2011–2014
SystemsDEF / SCR
EngineAGCO Power 4.9L–9.8L
MethodReflash Master handheld
TurnaroundTuned file in 2 hours
PowerStage 1 or Stage 2

Horsepower tunes · Challenger MT655D

Stock265HP
 
Factory rating
Stage 1292HP
 
+27 hp · +10%
Stage 2318HP
 
+53 hp · +20%

Numbers shown for the 265 hp MT655D with the AGCO Power 8.4L. Other D-series models see a similar percentage gain over their own rating. Call for the figures on your tractor.

 

Kit includes

01Reflash Master handheld device
02USB cable and diagnostic cable
03Quick Reference Guide
04Reflash Master Client software
EXHAUST No straight pipe needed The D-series meets Interim Tier 4 with SCR alone, so there is no DPF to remove and no EGR valve on the engine. The catalyst can stay on the tractor because it adds very little backpressure.

Handheld tuning process

STEP 01OrderCheck out online and your handheld kit typically leaves our shop the next business day.
STEP 02ReadPlug into the cab diagnostic connector and save the factory engine software to the handheld.
STEP 03SendUpload that file through the client software. Your tuned file comes back in about 2 hours.
STEP 04WriteFlash the new calibration to the ECM, cycle the key, and head back to the field.
VIDEO TUTORIALSee the Reflash Master in actionWatch →

Challenger tractors it fits

2011 to 2014 D-series Challengers with AGCO Power engines and e3 SCR.

Challenger · Tier 4iMT400D SeriesMT455D · MT465D · MT475D · MT485D · MT495D
Challenger · Tier 4iMT500D SeriesMT515D · MT525D · MT535D · MT545D · MT555D · MT565D · MT575D · MT585D · MT595D
Challenger · Tier 4iMT600D SeriesMT645D · MT655D · MT665D · MT675D · MT685D
Challenger · Tier 4iMT700D SeriesMT745D · MT755D · MT765D

Unsure if your tractor is a D-series? Snap a photo of the serial plate and send it over. We will confirm before you order.

Why delete DEF and SCR on a Challenger MT?

DEF

Diesel exhaust fluid

A big row crop Challenger can work through a surprising amount of DEF in a season, and every refill is another cost and another stop. Fluid that sits through the off-season breaks down and leaves crystals in the pump and lines, and a cold snap can freeze the tank solid. After the delete, run the tank dry and rinse the lines with washer fluid so nothing is left to set up.

SCR

Selective catalytic reduction

By now these e3 systems have plenty of hours on them. Worn dosing modules, plugged injectors and failing NOx sensors are common, and any one of them can pull the tractor into low power in the middle of planting or tillage. With SCR monitoring taken out of the calibration, the engine keeps making full power regardless of what the aftertreatment hardware is doing.

NOx

NOx sensors

Each SCR tractor relies on sensors before and after the catalyst, and they are expensive to replace and slow to arrive. Once the software stops checking them, an aging sensor no longer turns into a derate or a parts order.

More drawbar from the AGCO Power engine

The AGCO Power engines in these tractors leave headroom on the table from the factory. Stage 2 lifts an MT655D from 265 hp to about 318 hp, a little more than a stock MT675D.

01265 to 318 hpPull a wider implement with the tractor you already own.
02Holds RPM under loadThe engine stays in its sweet spot through heavy ground and grade changes.
03Less strain day to dayRoutine work needs less throttle, and the reserve is there for the hardest passes.

Frequently asked questions

Q1Why choose Reimer Tuning for a Challenger MT tractor?+

Our team writes the calibrations for the AGCO Power engines in these tractors ourselves, so there is no middleman between you and the file. Most tunes come back within 2 hours, each one carries a 1 year software warranty, and a technician can walk you through the flash over the phone.

Q2Does the tune work on every D-series model?+

Yes. The file is matched to your exact tractor, from the 4-cylinder MT400D up to the MT700D, after we read the stock software. Give us the serial number when you order and we will confirm your model before the kit ships.

Q3Can I order a horsepower tune without the DEF delete?+

Yes. Stage 1 and Stage 2 can be added to a DEF delete or ordered as a power-only file that keeps the factory SCR running. Let us know which setup you want when you send in the stock read.

Q4What is the difference between Stage 1 and Stage 2?+

Stage 1 adds around 10% and suits tractors that spend long days on PTO or tillage work at steady load. Stage 2 adds around 20% for operators who want the most pull from the drawbar. Both keep factory safeguards for coolant and exhaust temperature in place.

Q5Do I need to remove any exhaust parts?+

No. These tractors have no particulate filter, and the SCR catalyst can stay bolted on. Everything happens in the engine software, so there is no cutting, welding or plating.

Q6Can I tune a second tractor with the same handheld?+

Yes. You keep the Reflash Master, and we can add a license for another Challenger, Massey or other supported machine whenever you are ready.

Q7How fast does the kit ship?+

Kits usually go out within 1 business day to the US and Canada. Expedited orders placed after 12 ET ship the following day.

Q8Disclaimer+

Sold for off-road agricultural use only, and not for any machine registered for highway use. Check your state or provincial laws before ordering.

Why Reimer Tuning

We have been tuning ag equipment since 2014 out of our Canadian shop. Every Challenger file is backed by a 1 year software warranty, and when you call, you talk to someone who works on these AGCO tractors every week.

Off-road use only. Not for machines registered for highway use. Buyers are responsible for knowing their provincial or state legislation. All sales final.

2011-2014 Challenger MT Series Tractor Reflash

$1,850.00

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