6129Y 8.9L L6400hp

From 2009 · 2009 → present

Tuning gain

+88HP

+323Nm

Stock HP

400hp

Tuned HP

488hp

Stock Torque

1700Nm

Tuned Torque

2023Nm

Power curve

Horsepower

+88 hp

Stock

400

Tuned

488

Torque curve

Torque

+323 Nm

Stock

1700

Tuned

2023

Power & torque curves

Illustrative · interpolated from peak values

Stock HP
Stock Nm
Tuned HP
Tuned Nm

Available tuning options· Chiptuning

SCR OFFEGR OFFDPF OFFdtc's offEcoTuning

About this tune

DynoVault's Stage 1 chiptuning for King Long XMQ 6129Y 8.9L L6400hp delivers a measured gain of +88 hp (400 → 488) and +323 Nm of torque (1700 → 2023). The ECU file is custom-mapped per variant and tested against the original safety margins for boost, fueling, and EGT. Available with a lifetime tune warranty and optional fuel-economy mode.

Benefits

▸Custom file guarantee.
▸Possibly of minimize fuel consumption.