2014-2024 T4-T8 New Holland Tractor Reflash

From $1,850.00
Reflash Options
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$1,850.00
$1,850.00
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2014–2024 New Holland T4–T8 Tractor DEF Delete Tune

One reflash covers every New Holland T4 through T8 built from 2014 to 2024. Plug our Reflash Master handheld into the diagnostic port, and the DEF/SCR system is switched off in the engine software while the exhaust stays untouched. Add a Stage 1 or Stage 2 horsepower tune in the same session for up to 28% more power. We ship all across the US and Canada.

FitsT4, T5, T6, T7 & T8, 2014–2024
SystemsDEF / SCR
TierTier 4B
MethodReflash Master handheld
TurnaroundTuned file in 2 hours
PowerUp to 435 rated hp (T8.380)
Application list
T4T4.90 · T4.100 · T4.110 · T4.120
T5T5.110 · T5.120
T6T6.145 · T6.155 · T6.165 · T6.175 · T6.180
T7T7.175 · T7.190 · T7.210 · T7.225 · T7.230 · T7.245 · T7.260 · T7.270
T8T8.320 · T8.350 · T8.380 · T8.410 · T8.435

Horsepower tunes · New Holland T8.380

Stock340HP
 
Factory rating
Stage 1380HP
 
+40 hp · +12%
Stage 2435HP
 
+95 hp · +28%

All figures are rated horsepower, not maximum horsepower, and are shown for a T8.380. Smaller T4 to T7 models gain a similar share of their own rating, so give us a 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 exhaust modification needed New Holland T-Series tractors from 2014 to 2024 have no DPF. The SCR catalyst flows freely enough to stay bolted on, so the tractor is ready to work as soon as the file is written.
EGR EGR removed on 3.4 L engines T4 tractors with the 3.4 L FPT use an EGR valve, and our reflash shuts it off in software at the same time. Every larger T-Series engine was built without EGR, so nothing else changes.

Handheld tuning process

STEP 01OrderMost Reflash Master kits leave our shop within 1 business day.
STEP 02ReadConnect the handheld at the diagnostic port and save the tractor’s factory engine file.
STEP 03SendSend that file to us. We build your custom tune and return it in about 2 hours.
STEP 04WriteFlash the new file from the cab, turn the key and head back to the field.
VIDEO TUTORIALWatch a full Reflash Master walkthroughWatch →

Why delete the DEF on a New Holland T-Series?

DEF

Diesel exhaust fluid

From a T4 on the loader to a T8 on the drill, every one of these tractors needs DEF on hand alongside diesel. It is about two-thirds water, so it freezes in a cold shed, and a tank that sits half full between seasons can leave crystals in the pump and filter. Taking DEF out of the software means one less fluid to buy, haul and worry about.

SCR

Selective catalytic reduction

On Tier 4B New Holland tractors, the SCR system is the whole emissions package, and the engine watches it closely. A failing NOx sensor, a frozen line or a weak dosing module can trigger a derate in the middle of haying or seeding. Once the reflash removes that monitoring, those parts can no longer limit the tractor.

Built to take more power

Across the T8 range, the T8.320 and the T8.435 run the same FPT engine. The horsepower on the hood decal comes from the engine calibration, not from different hardware. That shared design is why a T8.380 responds so well to a custom tune.

01Software sets the ratingLower and higher T8 models share one engine. The calibration is what changes.
02Up to 435 rated hpStage 2 takes a T8.380 from 340 to 435 rated hp.
FROM THE BLOGReplacement for DisplacementWhy calibration, not engine size, decides the rating. Read →

Frequently asked questions

Q1Why get my New Holland tune from Reimer Tuning?+

Our own team writes every T-Series file in house. Each one carries a 1 year software warranty, comes back in about 2 hours, and is backed by techs you can call if you get stuck mid-flash.

Q2Do I need to change the exhaust?+

No. There is no DPF or EGR on these tractors, and the SCR catalyst does not restrict flow, so it stays in place. If your tractor has very high hours, call us and we will check it with you.

Q3What happens to the DEF tank?+

After the reflash, the engine no longer uses or checks DEF. Drain the tank and flush it with washer fluid so nothing crystallizes, then leave it empty. Low-level and quality warnings will stay off.

Q4Can I use the handheld on another machine?+

Yes. You keep the Reflash Master after the job. Contact us and we can license it for another tractor or machine on your farm.

Q5Will a horsepower tune burn more fuel?+

On the same job, usually not. A tuned T-Series reaches working torque sooner and runs at a lighter load for everyday work. Fuel use only climbs when you call on the added horsepower for a heavier implement or a tougher pull.

Q6How fast do you ship?+

We ship across the US and Canada, most often within 1 business day. Expedited orders that come in after 12 ET go out the next day.

Q7Disclaimer+

Off-road agricultural use only. Not to be installed on any machine registered for road use. It is up to the buyer to know their state or provincial laws.

Why Reimer Tuning

Every New Holland file is written and tested by our own team and carries a 1 year software warranty. We are owned and run in Canada, have tuned farm equipment since 2014, and a tech who knows T-Series tractors answers the phone.

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

2014-2024 T4-T8 New Holland Tractor Reflash

$1,850.00

Questions about this product?
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