Catalog/ Trucks & buses/ King Long/ XMQ6129Y
← King Long XMQ6129Y engines

King Long XMQ6129Y 8.9L 390hp

All · 390 hp · diesel
Stage 1
OriginalAfter tuningDiff
Power hp390 450 +60
Torque Nm1520 1750 +230
Power gain
+15%
Torque gain
+15%
Fuel economy −9%
Before
26.0 L / 100 km
After tuning
23.7 L / 100 km
Saves ≈ 2.3 L / 100 km — about 2 316 L (over 100 000 km) ≈ €4 054
Estimate for a typical duty cycle · real saving depends on load & driving style
Ready to feel these +60 hp on the road?
Get your ready-to-flash Stage 1 file for the King Long XMQ6129Y
Order tuning file →
Stage 1 file: €140
✓ Original file back-up ✓ Delivered in ~30 min ✓ Support included
Power graph / Stage 1
PowerTorqueStock
dyno graph