Expected gains of +75 BHP and +391 Nm torque
Get Your Free Quote ↓Considering an ECU remap for your Mack Econodyne AC - 400 - 12.0 405hp? A Stage 1 remap can take this All diesel engine from 405 BHP to 480 BHP and from 1979 Nm to 2370 Nm of torque (turbocharged). This engine scores 7/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Mack Econodyne can achieve.
The Mack Econodyne AC - 400 - 12.0 405hp is a turbocharged diesel engine producing 405 BHP and 1979 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 480 BHP and 2370 Nm — a gain of around 75 BHP (19%) and 391 Nm (20%).
This engine has moderate remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as moderate, based on the percentage gain available from the factory output.
Considerations: High tuned torque: check transmission torque capacity and service history.
Fuel economy note: possible improvement with conservative driving.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| AI - 300A - 12.0 305hp | 305 → 360 | +55 | 1627 → 1900 | +273 | Good (7/10) |
| AC - 350 - 12.0 352hp | 352 → 418 | +66 | 1844 → 2100 | +256 | Good (7/10) |
| AI - 350 - 12.0 355hp | 355 → 420 | +65 | 1708 → 2000 | +292 | Good (7/10) |
| AI - 375A - 12.0 381hp | 381 → 440 | +59 | 1708 → 2000 | +292 | Good (7/10) |
| AI - 400 - 12.0 405hp | 405 → 470 | +65 | 1843 → 2100 | +257 | Good (6.5/10) |
| AI - 427 - 12.0 432hp | 432 → 495 | +63 | 1979 → 2300 | +321 | Good (7/10) |
| AC - 427 - 12.0 432hp | 432 → 490 | +58 | 2115 → 2360 | +245 | Good (6.5/10) |
| AI - 12.0 - 460 466hp | 466 → 530 | +64 | 2115 → 2400 | +285 | Good (6.5/10) |
| AC - 460P - 12.0 466hp | 466 → 520 | +54 | 2250 → 2550 | +300 | Good (6.5/10) |
| AC - 460E - 12.0 466hp | 466 → 520 | +54 | 2250 → 2550 | +300 | Good (6.5/10) |
Get a personalised remap quote for your Mack Econodyne. We'll connect you with a trusted professional in your area.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.