2012-Present Massey Ferguson Windrowers Reflash

From $2,495.00
Reflash Options
Windrower Model
Tooling
$2,495.00
$2,495.00
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2012+ Massey Ferguson Windrower DEF Delete Tune

For Hesston-built WR9700, WR9800 and WR9900 windrowers. Plug the Reflash Master handheld into the cab diagnostic port and load software that shuts off DEF dosing, so hay season is not held up by an SCR fault. Pair it with a Stage 1 or Stage 2 file to keep the header at speed in heavy crop. We ship all across the US and Canada.

FitsWR9700–WR9900 Series, 2012–Present
SystemsDEF / SCR
EngineAGCO Power 4.9L · 6.6L · 7.4L
MethodReflash Master handheld
TurnaroundTuned file in 2 hours
PowerUp to 264 hp (WR9770)

Horsepower tunes · Massey Ferguson WR9770

Stock220HP
 
Factory rating
Stage 1242HP
 
+22 hp · +10%
Stage 2264HP
 
+44 hp · +20%

Based on a 220 hp WR9770. Other WR models see a similar percentage gain over their own factory rating. Call us for figures on your windrower.

 

Kit includes

01Reflash Master handheld device
02USB cable and diagnostic cable
03Quick Reference Guide
04Reflash Master Client software
EXHAUST Nothing to cut out of the exhaust These windrowers have no DPF and no EGR. Their only aftertreatment is the SCR catalyst, which adds very little back pressure, so it stays bolted on and the job is done entirely in software.

Handheld tuning process

STEP 01OrderPlace your order and the handheld kit ships out, usually the next business day.
STEP 02ReadConnect to the diagnostic port in the cab and pull a copy of the stock engine file.
STEP 03SendUpload the stock file from your computer. Our team returns the modified version in roughly 2 hours.
STEP 04WriteLoad the new software onto the ECM with the same handheld, key off, and you are done.
VIDEO TUTORIALSee the Reflash Master in actionWatch →

Massey Ferguson windrowers it fits

Hesston by Massey Ferguson self-propelled windrowers with AGCO Power engines and factory SCR.

Massey FergusonWR9700 SeriesWR9735 · WR9740 · WR9760 · WR9770
Massey FergusonWR9800 SeriesWR9840 · WR9860 · WR9870
Massey FergusonWR9900 SeriesWR9950 · WR9960 · WR9970 · WR9980

Have a different header or engine option? Email a photo of the serial plate and we will confirm the right file.

Why delete the DEF on a Massey Ferguson windrower?

DEF

Diesel exhaust fluid

A windrower works a few short seasons a year and spends the rest parked in the shed, which is the worst case for DEF. Fluid left in the tank goes stale, freezes over winter and dries into crystals that plug the pump and lines before the first cut. After the reflash, drain the tank and flush everything with washer fluid so no residue sits in the system.

SCR

Selective catalytic reduction

Hay waits for no one, and an SCR fault that cuts engine power during cutting can cost a day of good drying weather. Dosing modules, heated lines and NOx sensors on these machines are expensive and often back-ordered in summer. Once the software stops checking that hardware, a failed part no longer slows the header down.

Keep the header at full speed

A disc header in thick, wet crop asks a lot of the engine. With Stage 2, a WR9770 goes from 220 hp to about 264 hp, so the header holds speed and ground speed stays up through heavy spots.

01220 to 264 hpA clear jump in power on the windrower you already run.
02Stronger low-end torqueEngine speed holds when the header meets dense alfalfa or lodged crop.
03More acres in a dayLess slowing down in tough patches means more ground covered while the weather holds.

Frequently asked questions

Q1Why choose Reimer Tuning for a Massey windrower?+

We write our own files for the AGCO Power engines in these windrowers and send them back in about 2 hours. Every tune carries a 1 year software warranty, and our techs are a phone call away while you flash.

Q2Can the handheld be used on my other equipment?+

Yes. You keep the Reflash Master, and we can add another machine such as a Massey tractor or combine to it later. Call when you are ready to tune the next one.

Q3Does a horsepower tune use more fuel?+

Rarely. The tuned file makes power more efficiently, so the engine carries the same header with less effort. In typical cutting, fuel use holds steady or drops slightly, and only goes up when you use the extra power.

Q4How fast will my kit arrive?+

Kits usually ship within 1 business day to anywhere in the US or Canada. Expedited orders placed after 12 ET leave the following day.

Q5Disclaimer+

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

Why Reimer Tuning

Since 2014, Reimer Tuning has written engine software for farm machines across North America. We are Canadian owned, and each windrower file is covered by a 1 year software warranty.

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

2012-Present Massey Ferguson Windrowers Reflash

$2,495.00

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