2011-14 T4/T5 New Holland Tractor Reflash

From $1,850.00
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$1,850.00
$1,850.00
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2011–2014 New Holland T4 / T5 Tractor DPF & EGR Delete Tune

Early Tier 4A T4 and T5 tractors lean on a DPF and an EGR valve to meet emissions, and after a decade of loader work both are common reasons for a derate. The Reflash Master handheld turns off DPF and EGR control from the diagnostic port, then you hollow out the filter or fit a straight pipe. Add a horsepower tune in the same session for up to 20% more rated power. We ship all across the US and Canada.

FitsT4 & T5, 2011–2014
SystemsDPF / EGR
TierTier 4A
MethodReflash Master handheld
TurnaroundTuned file in 2 hours
PowerUp to 137 rated hp (T5.115)
Application list
T4T4.75 · T4.85 · T4.95 · T4.105 · T4.115
T5T5.95 · T5.105 · T5.115

Horsepower tunes · New Holland T5.115

Stock114HP
 
Factory rating
Stage 1125HP
 
+11 hp · +10%
Stage 2137HP
 
+23 hp · +20%

Numbers are rated horsepower, not maximum horsepower, measured against a T5.115. A T4.75 or T4.95 gains about the same percentage on its own lower rating. Call us and we will work out the figures for your model.

 

Kit includes

01Reflash Master handheld device
02USB cable and diagnostic cable
03Quick Reference Guide
04Reflash Master Client software
EXHAUST Hollow out or straight pipe the DPF The software stops regens and soot monitoring, but a loaded filter still chokes the exhaust. Before you run the tractor, either gut the DPF canister and reinstall the empty shell or replace it with a straight pipe.
EGR EGR turned off in the file Every model on this page runs the 3.4 L FPT with an EGR valve. The same reflash closes it, so sooty exhaust stops cycling back into the intake.

Handheld tuning process

STEP 01OrderOrder online or by phone. We usually ship the handheld the next business day.
STEP 02ReadPlug into the T4 or T5 diagnostic port and pull a copy of the stock ECM file.
STEP 03SendUpload the stock file from your computer. Your custom file is back in around 2 hours.
STEP 04WriteLoad the file, deal with the DPF canister, then start up and get back to work.
VIDEO TUTORIALWatch a full Reflash Master walkthroughWatch →

Why delete the DPF and EGR on a Tier 4A T4 / T5?

DPF

Diesel particulate filter

A T4 or T5 spends much of its life on light jobs like feeding, mowing and yard work, which never gets the exhaust hot enough to clean the filter on its own. The tractor then has to stop for parked regens, and a filter that keeps loading up ends up needing a costly cleaning or replacement. With the DPF out of the software and the canister emptied, those interruptions go away.

EGR

Exhaust gas recirculation

The EGR system feeds cooled exhaust back into the 3.4 L intake to cut NOx. That gas carries soot, which builds up as carbon in the valve, cooler and intake manifold. A stuck valve or a failing cooler brings warning codes, rough running and lost pulling power. Closing the EGR keeps clean air going into the engine.

One engine across the T4 and T5

From the T4.75 to the T5.115, these tractors share a 3.4 L four-cylinder FPT. The model number reflects how the engine was calibrated at the factory, so a custom file built from your own ECM read can safely add power.

01Software sets the ratingThe T4.75 and the T5.115 run the same 3.4 L block. Only the calibration differs.
02Up to 137 rated hpStage 2 lifts a T5.115 from 114 to 137 rated hp.
FROM THE BLOGReplacement for DisplacementWhy calibration, not engine size, decides the rating. Read →

Frequently asked questions

Q1Why buy my T4 / T5 tune from Reimer Tuning?+

Our team builds each Tier 4A New Holland file from your tractor’s own ECM read. You get it back in about 2 hours, it carries a 1 year software warranty, and a tech is a phone call away during the flash.

Q2Do I hollow out the DPF or fit a straight pipe?+

Either one works with our file. Gutting the canister keeps the factory look under the hood, while a straight pipe replaces the canister completely. One of the two must be done, because a plugged filter will still restrict the exhaust.

Q3Is the EGR turned off as well?+

Yes. All of these tractors use the 3.4 L FPT with EGR, and the same file closes the valve. Nothing has to be unplugged or removed for that part of the job.

Q4Can I use the handheld on another machine?+

Yes, the Reflash Master stays with you. Call us and we can license it for another tractor or machine you own.

Q5Will a horsepower tune burn more fuel?+

For the same work, usually not. More torque comes in at lower rpm, so the engine is not working as hard under a normal load. You only use more fuel when you put the extra power to work on a heavier implement.

Q6How fast do you ship?+

Most kits leave the next business day for anywhere in the US and Canada. Expedited orders placed after 12 ET ship the day after.

Q7Disclaimer+

Off-road agricultural use only. Do not install on a machine registered for road use. Buyers are responsible for knowing their state or provincial laws.

Why Reimer Tuning

We are a Canadian shop that has tuned farm equipment since 2014. Each Tier 4A T4 and T5 file is written and tested in house with a 1 year software warranty, and the person who answers the phone has worked on 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.

2011-14 T4/T5 New Holland Tractor Reflash

$1,850.00

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