2014-Present TerraGator Spreader Reflash
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2014+ TerraGator DEF Delete Tune
B and C series TerraGators meet Tier 4 Final with AGCO’s SCR system, which means DEF has to be on hand for every load and a single sensor fault can slow the whole operation. Our Reflash Master handheld connects in the cab and loads a calibration that turns the DEF/SCR system off. Pair it with a Stage 1 or Stage 2 tune for up to 20% more power on everything from the TG7300 to the TG9300. We ship all across the US and Canada.
Horsepower tunes · TerraGator TG8300B
Shown for a TG8300B at 365 hp. Each B and C series model gets the same 10% and 20% increase over its own rating, so a 425 hp TG9300 lands near 468 hp and 510 hp. Contact us to confirm numbers for your unit.
Kit includes
Handheld tuning process
TerraGator models it fits
B and C series TerraGator floaters with Tier 4 Final AGCO Power engines.
Have a 2011 - 2014 TG7300, TG8300 or TG8400 with the Tier 4i engine? It has its own listing under Other models.
Why delete the DEF on a B or C series TerraGator?
Diesel exhaust fluid
Custom applicators put long days on a TerraGator during spring and fall rushes, and DEF becomes one more thing to haul out with the tender truck. Bad or diluted fluid triggers quality faults, and a cold snap can leave the heated lines unable to thaw in time. Removing DEF from the equation takes the refills, storage and fluid faults off your list.
Selective catalytic reduction
On Tier 4 Final engines, the ECM tracks SCR efficiency closely and steps down power when readings fall outside its window. A worn NOx sensor or a sticking doser on a TG8300B or TG9300C can mean an unplanned dealer visit in peak season. With SCR monitoring disabled in our file, those faults no longer limit the engine.
Covers the full B and C lineup
This kit fits eight TerraGator models across two series and two engine sizes. We build each file from the read taken off your floater, so the settings suit its engine and factory power level.
Frequently asked questions
Q1Which TerraGators does this listing cover?+
The TG7300B, TG8300B, TG8400B and TG9300B, plus the TG7300C, TG8300C, TG8400C and TG9300C. Tier 4i TerraGators from 2011 - 2014 have a separate listing.
Q2Do I need to remove anything from the exhaust?+
No. B and C series TerraGators have no DPF, and the SCR catalyst can stay installed. The DEF delete is handled in the engine software.
Q3What should I do with the DEF system afterward?+
Empty the DEF tank, then run washer fluid through the pump and lines. Clearing out the old fluid stops it from crystallizing and clogging parts while they sit.
Q4What power gains do the tunes give?+
Around 10% with Stage 1 and 20% with Stage 2. A TG8300B goes from 365 hp to roughly 402 hp and 438 hp, and a TG9300 from 425 hp to about 468 hp and 510 hp.
Q5Can I tune more than one TerraGator with the handheld?+
Yes. The first flash locks the Reflash Master to that floater’s VIN, so the file can only be written to the machine it was made for. You keep the device. When your next TerraGator is ready, contact us to unlock it, then read, send and write as before. Each additional machine receives its own file, priced as a separate tune.
Q6How quickly do kits ship?+
Orders usually leave the next business day and ship anywhere in the US and Canada. Expedited orders placed after 12 PM ET ship the following day.
Q7Disclaimer+
Intended only for off-road agricultural equipment. Do not use on any machine registered for road or highway use, and review the regulations in your state or province before you buy.
Why Reimer Tuning
Our team builds each Tier 4 Final TerraGator file in house and includes a 1 year software warranty. We are a Canadian business that has tuned farm machinery since 2014, and you can call to speak with a technician directly.
Off-road use only. Not for machines registered for highway use. Buyers are responsible for knowing their provincial or state legislation. All sales final.

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$1,850.00