6129Y 8.9L L6441hp

From 2009 · 2009 → present

Tuning gain

+66HP

+323Nm

Stock HP

441hp

Tuned HP

507hp

Stock Torque

1700Nm

Tuned Torque

2023Nm

Power curve

Horsepower

+66 hp

Stock

441

Tuned

507

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 L6441hp delivers a measured gain of +66 hp (441 → 507) 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.