Mack Trucks MP8 (2005 >) All years MP8-455M (US07) 12.0 461hp (339kW) 2237Nm remap
Standard this engine makes 461hp and 2237Nm. Our Stage 1 file takes it to 521hp and 2548Nm.
Where the power arrives
Both curves scaled from the manufacturer figures, on the Stage 1 file.
- Standard 461hp
- Remapped 521hp
- Standard 2237Nm
- Remapped 2548Nm
Stages for this engine
Stage 1 needs nothing fitted. Anything above assumes the supporting hardware is on the car already.
Every figure for the MP8-455M (US07) 12.0 461hp (339kW) 2237Nm
| File | Power | Gain | Torque | Gain | Price |
|---|---|---|---|---|---|
| Standard | 461hp | n/a | 2237Nm | n/a | n/a |
| Stage 1 | 521hp | up 60 | 2548Nm | up 311 | ask us |
Economy files show no new power figure because they are written for torque and drivability rather than peak output.
Remapping the MP8-455M (US07) 12.0 461hp (339kW) 2237Nm
The Mack Trucks MP8 (2005 >) All years MP8-455M (US07) 12.0 461hp (339kW) 2237Nm runs a factory calibration built to cope with poor fuel, skipped servicing and hot countries. We rewrite the fuelling, boost and timing for this engine on this car, then test it before you get it back. The original file is kept, so it can go back to standard whenever you want.
On the petrol side the difference shows in throttle response and in how hard it pulls through the top half of the rev range. It feels sharper off idle and keeps going where it used to flatten out.
Figures on this page are for a standard car in good health. We read the fault codes and check the basics first, and if something needs attention we will tell you before we write anything. Have a look at the other engines on the All years, the full MP8 (2005 >) range, or everything we do for Mack Trucks.
Other engines on this MP8 (2005 >)
All years cars.
- MP8-415C (US07) 12.0 420hp (309kW) 2251Nm420hp standard
- MP8-425E (US07) 12.0 431hp (317kW) 2115Nm431hp standard
- MP8-425M (US07) 12.0 431hp (317kW) 2088Nm431hp standard
- MP8-445C (US07) 12.0 452hp (332kW) 2251Nm452hp standard
- MP8-455E (US07) 12.0 461hp (339kW) 2251Nm461hp standard
- MP8-485C (US07) 12.0 492hp (362kW) 2170Nm492hp standard
- MP8-485E (US07) 12.0 492hp (362kW) 2170Nm492hp standard
- MP8-485M (US07) 12.0 492hp (362kW) 2305Nm492hp standard
Book your MP8 (2005 >)
We write and test every file at our Aston workshop, on our own rolling road. Ring us with your reg and we will tell you what your car should make before you commit to anything.