2014-Present Massey Ferguson Tractor Reflash
From $2,495.00
Couldn't load pickup availability
Want next day delivery? Be quick!
Shop safely
Secure your shopping experience with various safe and trusted payment methods.
2014+ Massey Ferguson Tractor DEF Delete Tune
Made for the AGCO Power utility and mid-size Masseys. The Reflash Master handheld connects at the cab diagnostic port and loads new engine software that turns off DEF dosing for good. Early 4600 and 5600 tractors without DEF can get an EGR and DOC delete instead. Add a Stage 1 or Stage 2 file for more torque on the loader and PTO. We ship all across the US and Canada.
Horsepower tunes · Massey Ferguson 4609
Figures shown for a 90 hp MF 4609. Larger models gain a similar percentage of their own rating. Ask us for the numbers on your tractor.
Kit includes
Handheld tuning process
Massey Ferguson tractors it fits
2014 and newer Masseys powered by AGCO Power 3- and 4-cylinder engines.
Not sure which version you have? Send us a photo of the serial plate and we will match the right file.
Why delete the DEF, EGR and DOC on a Massey Ferguson?
Diesel exhaust fluid
Utility tractors often sit for weeks between jobs, and that is hard on DEF. The fluid is mostly water, so it can freeze and split a tank over a cold winter in the yard, and it leaves crusty deposits in the lines when it sits too long. Once dosing is switched off, drain the tank and flush the system with washer fluid so nothing is left behind to harden.
Selective catalytic reduction
On these AGCO Power engines, a weak dosing pump, a clogged injector or a NOx sensor going out of range will drop the tractor into derate, often in the middle of baling or loader work. Those repairs mean dealer parts and a trip to the shop. With the SCR checks removed from the software, the tractor keeps full power no matter what that hardware reports.
Exhaust gas recirculation
Routing hot exhaust back into the intake leaves soot behind in the cooler, valve and intake manifold. On the early 4600 and 5600 tractors that use it, especially loader tractors that idle and runs at low load much of the day, that buildup comes fast and robs power over time. Removing EGR from the calibration means the engine breathes only clean air, and a sticking valve or cracked cooler stops being a repair bill.
Diesel oxidation catalyst
The DOC can plug or lose efficiency with age, and on some setups the software watches its temperatures and flags faults when readings drift. Deleting it in software stops those checks, so a worn catalyst no longer brings up warnings or cuts power.
More pull from the AGCO Power engine
Massey rates these engines conservatively from the factory. A Stage 2 file takes a 4609 from 90 hp to about 108 hp, more than a stock 4610 makes.
Frequently asked questions
Q1Why go with Reimer Tuning for a Massey Ferguson?+
We build the software for these AGCO Power engines in house, and the tuned file is back in about 2 hours. Every file comes with a 1 year software warranty, and a technician can stay on the line while you flash.
Q2Can you tune a 4600 or 5600 without DEF?+
Yes. Some early 4600 and 5600 tractors use EGR and a DOC instead of DEF, and we offer EGR and DOC deletes for those. The SCR models never had EGR, so on those the DEF reflash covers it. Send us your serial number and we will set up the correct file.
Q3Can I use the handheld on other machines?+
Yes. The Reflash Master is yours to keep, and we can license it for another tractor, combine or windrower later. Call us when you are ready for the next machine.
Q4Does the tractor still use DEF after the tune?+
No. Dosing is turned off and the DEF warnings are cleared, so a low, frozen or bad tank will not throw a fault or limit power.
Q5Will a horsepower tune burn more fuel?+
Not usually. A better fuel and boost calibration means the engine does the same job at a lighter throttle. Run it the way you always have and fuel use tends to stay flat or drop a little. It only climbs when you lean on the extra power.
Q6How quickly does my kit ship?+
Most kits ship within 1 business day to the US and Canada. Expedited orders placed after 12 ET go out the next day.
Q7Disclaimer+
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
Reimer Tuning has been tuning farm equipment since 2014. We are a Canadian owned shop, every Massey file includes a 1 year software warranty, and the person who answers the phone knows these tractors.
Off-road use only. Not for machines registered for highway use. Buyers are responsible for knowing their provincial or state legislation. All sales final.

Shopping Safely
At our Shopify store, we prioritize your safety and security. Here's how we ensure a secure shopping experience:
1. Secure Transactions: We use advanced encryption to protect your personal and payment information, ensuring it is safely transmitted and safeguarded.
2. Trusted Payment Gateways: Our store integrates with trusted payment gateways, ensuring your transactions are processed securely and efficiently.
3. Data Privacy: Your privacy is our top priority. We follow strict data protection policies to keep your personal information confidential and secure.
4. Secure Platform: Shopify provides robust security features and continuous monitoring against vulnerabilities, ensuring a safe shopping environment.
5. Verified Merchants: We are a verified merchant on Shopify, committed to providing authentic and high-quality products.
6. Transparent Policies: Our clear return, refund, and shipping policies provide peace of mind, knowing we stand behind our products.
7. Customer Support: Our dedicated customer support team is ready to assist with any concerns or questions you may have.
Shop confidently at our Shopify store, where your safety and satisfaction are our top priorities.
$2,495.00