Valtra N Series 91 4.4L 104hp (76kW) 405Nm — Stage 1 file (+24 hp)

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Chip tuning for Valtra N Series 91 4.4L 104hp (76kW) 405Nm ECU

Valtra N Series (I) 91 4.4L 104hp (76kW) 405Nm — agricultural diesel engine of the agricultural segment of the AGCO Corporation group (Финляндия, 1951). Stage 1 chip tuning raises power from 104 to 128 hp (+24 hp, +23%) and torque from 405 to 527 Nm (+122 Nm).

Valtra is a Finnish tractor manufacturer, founded in 1951. Valtra is part of AGCO Corporation. Valtra specialises in tractors built for Nordic conditions. Сельхоз дизели имеют расширенный набор карт под нагрузку и работу на низких оборотах. Заводская калибровка сельхоз-дизелей консервативна — большой запас под Stage 1. DPF/SCR с AdBlue — стандарт на современных Tier 4/Stage V агро-моторах.

Stage 1 на агро-дизелях — заметный прирост момента для тяги. Stage 1 в агросегменте фокусируется на крутящем моменте для тяговых работ. Сельхозсегмент — расход и тяга важнее л.с. Valtra среднего класса — массовый объект чип-тюнинга в агросегменте.

Frequently asked questions

What power gain do you get after chip tuning the Valtra N Series 91 4.4L 104hp (76kW) 405Nm?

Stage 1 for the Valtra N Series 91 4.4L 104hp (76kW) 405Nm adds +24 hp — power increases from 104 to 128 hp (+23%). Torque rises from 405 to 527 Nm (+122 Nm).

What does a Stage 1 remap of the Valtra N Series 91 4.4L 104hp (76kW) 405Nm include?

Stage 1 is a software optimization of the factory ECU firmware of the Valtra N Series with no hardware changes. The injection, boost, ignition-timing and torque maps are reprogrammed. The gain is +24 hp with no hardware changes.

What is the risk of Stage 1 on the Valtra N Series 91 4.4L 104hp (76kW) 405Nm?

A remap of the Valtra N Series 91 4.4L 104hp (76kW) 405Nm is safe — the factory calibration in this mid-range class is conservative, leaving genuine headroom for Stage 1 with no hardware changes.

What is Stage 2 for the Valtra N Series 91 4.4L 104hp (76kW) 405Nm?

Stage 2 for the Valtra N Series 91 4.4L 104hp (76kW) 405Nm is Stage 1 plus hardware changes: a downpipe, a larger intake and a performance intercooler. The gain is considerably higher, but it requires professional component selection.

Does the factory warranty of the Valtra N Series remain valid after Stage 1?

After remapping the Valtra N Series, the official factory warranty on the engine and gearbox is lost (this applies to any manufacturer when the ECU is modified). CHIPOK guarantees the quality of the calibration and free revisions.

How long is the wait for a Stage 1 remap for the Valtra N Series?

Reading and writing via OBD takes 25-30 minutes on the Valtra N Series. Bench reading (BDM/JTAG) takes about 60 minutes plus refitting. Remote file processing at CHIPOK takes 5-30 minutes.

How do you roll back to the factory firmware of the Valtra N Series?

Before Stage 1 the original of the Valtra N Series 91 4.4L 104hp (76kW) 405Nm is read out and saved — returning to the factory state is possible at any time.

How much does chip tuning the Valtra N Series 91 4.4L 104hp (76kW) 405Nm cost?

The remap price for the Valtra N Series 91 4.4L 104hp (76kW) 405Nm is dynamic and is calculated in the CHIPOK calculator based on the selected options. A credit-based payment model, with no subscription fees.

Last updated: 30.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno