Fendt 800 serie 817 Vario 165hp (121kW) 780Nm — Stage 1 file (+33 hp)

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Chip tuning for Fendt 800 serie 817 Vario 165hp (121kW) 780Nm ECU

Fendt 800 serie (I) 817 Vario 165hp (121kW) 780Nm — agricultural diesel engine of the agricultural segment of the AGCO Corporation group (Германия, 1930). Stage 1 chip tuning raises power from 165 to 198 hp (+33 hp, +20%) and torque from 780 to 945 Nm (+165 Nm).

Fendt sits in the premium agricultural segment with a strong focus on technology. Fendt is a German premium tractor manufacturer, founded in 1930. Fendt is part of AGCO Corporation. Сельхозтехника — основной объект тюнинга в агросегменте; прирост момента критичен для тяговых работ. DPF/SCR с AdBlue — стандарт на современных Tier 4/Stage V агро-моторах. Агро-дизели среднего диапазона — массовый объект чип-тюнинга.

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

Frequently asked questions

How much horsepower does Stage 1 add for the Fendt 800 serie 817 Vario 165hp (121kW) 780Nm?

After Stage 1 the power of the Fendt 800 serie 817 Vario 165hp (121kW) 780Nm rises from 165 to 198 hp, a gain of 33 hp (+20%). Torque rises from 780 to 945 Nm (+165 Nm).

How does Stage 1 differ from stock on the Fendt 800 serie?

Stage 1 on the Fendt 800 serie 817 Vario 165hp (121kW) 780Nm is a software ECU calibration with no hardware changes. The key maps (boost/ignition/lambda/torque) are adjusted while factory tolerances are preserved. The gain is +33 hp with no hardware changes.

Is a Stage 1 remap safe for the 817 Vario 165hp (121kW) 780Nm?

Stage 1 on the Fendt 800 serie 817 Vario 165hp (121kW) 780Nm is developed while keeping the factory AFR, knock control and temperature limits. Engine life is preserved provided regular maintenance is carried out.

How does Stage 2 differ from Stage 1 on the Fendt 800 serie 817 Vario 165hp (121kW) 780Nm?

Stage 2 on the Fendt 800 serie 817 Vario 165hp (121kW) 780Nm means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.

Does Stage 1 void the warranty on the Fendt 800 serie?

Stage 1 on the Fendt 800 serie voids the factory warranty on the engine and transmission — this is standard for all manufacturers. CHIPOK provides its own warranty on the quality of the remap.

How quickly is chip tuning of the Fendt 800 serie 817 Vario 165hp (121kW) 780Nm done?

The full remap cycle for the Fendt 800 serie — from reading to writing the final file — takes 30-90 minutes depending on the ECU access method. The file is prepared at CHIPOK in 5-30 minutes.

Can you return to stock after Stage 1 on the Fendt 800 serie?

The original Fendt 800 serie ECU is always saved before flashing. Rolling back to the factory firmware is done with the same programmer in 25-30 minutes.

How much does Stage 1 cost for the Fendt 800 serie 817 Vario 165hp (121kW) 780Nm?

The cost of Stage 1 for the Fendt 800 serie 817 Vario 165hp (121kW) 780Nm is calculated in the calculator on this page — you select the options (DPF off, EGR off, AdBlue off, DTC off, etc.) and the price is capped by the package Max Price. Payment is by credits (1 cr = 1 €), with no subscriptions.

Last updated: 01.09.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno