ECO

BMW 4-Series F32/33 2016 onwards M4 CS ECO

An economy file for the M4 CS. Torque goes to 680Nm, which is what makes it easier to drive without revving.

+80newton metres
£890from

Where the gain arrives

Standard against ECO through the rev range.

Power curve
01242483734971,0002,0503,1004,1505,2006,250 RPM 01242483734971,0002,6754,3506,025hp RPM
  • Standard 460hp
Torque before and after
01843675517341,0002,0503,1004,1505,2006,250 RPM 01843675517341,0002,6754,3506,025Nm RPM
  • Standard 600Nm
  • Remapped 680Nm

Standard against ECO

MeasureStandardAfterGain
Power460hpn/an/a
Torque600Nm680Nmup 80

No new power figure is published for an economy file. It is written for torque and drivability, not peak output.

What ECO involves

This one is aimed at running costs and how the car drives day to day. Torque comes in earlier and more evenly, so it pulls without needing revs. Driven sensibly it will usually give back a little on fuel. If you are after outright power, look at the other files above.

It takes most of a day. We keep your original file, so it can go back to standard at any point. Figures here are for a healthy M4 CS, and we check the car over before writing to it.

See the full M4 CS page for every file and figure, the other engines on this 4-Series, or all BMW remapping.

Book your 4-Series ECO

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.