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← Mack Trucks Econodyne engines

Mack Trucks Econodyne AC-427 12.0 432hp (318kW) 2115Nm

I (1990 - 2005) · 432 hp
Stage 1
OriginalAfter tuningDiff
Power hp432 490 +58
Torque Nm2115 2355 +240
Power gain
+13%
Torque gain
+11%
Fuel economy −9%
Before
28.8 L / 100 km
After tuning
26.3 L / 100 km
Saves ≈ 2.5 L / 100 km — about 2 546 L (over 100 000 km) ≈ €4 456
Estimate for a typical duty cycle · real saving depends on load & driving style
Ready to feel these +58 hp on the road?
Get your ready-to-flash Stage 1 file for the Mack Trucks Econodyne
Order tuning file →
Stage 1 file from €120
Exact price depends on the ECU — confirmed when you upload the file
✓ Original file back-up ✓ Delivered in ~30 min ✓ Support included
Power graph / Stage 1
PowerTorqueStock
dyno graph