Find Your Remap

From THE UK's Largest Selection!

MoreBHP Promise

The ULTIMATE In Custom Remapping!


- Live diagnostics

- In-house remap calibration

- Numerous dyno measurements

- Degree level remap engineers

- Road simulation testing

- Real road testing

- Proof of results

- Free return to original

- 5 year guarantee

Latest Releases

Now available for remapping...

Approved Installers

Handpicked, Trusted and Capable!

The Newsletter

Latest News and Special OFFERS
You must enter a name...
Email Address:
You must enter an email address...

New BMW M3 M4 Custom ECU Remap

Tried and tested M3 and M4 remaps now available at MoreBHP: Up to 545bhp now available.

The New M3 and M4 are true works of BMW art. Leaving little room for hardware modification.

However with the high hardware spec room can be found for improvements in the ECU programming.

With a slight increase in turbo boost along with carefully optimised timing, fuelling rework and various limiter massages over 500bhp is available. This is custom software enhancement only, no hardware modifications required - standard air filters, standard exhaust, etc, etc.

More importantly this is a genuine custom remap NOT a tuning box. Fitting a tuning box to such a car is total stupidity, we have tested these so called solutions and found the ECU having to close the throttle to prevent engine damage due to excessive knocking (the result of way too much boost without correct fuelling/timing calibration).

We have spent countless hours developing and testing MoreBHP software on our own M3.

New M3 M4 Custom ECU Remap

In addition to the obvious benefits of 500+bhp/700+Nm the following is also included-

  • Cold start off (especially handy if you have a noisy decat at cold)
  • Decat MIL off 
  • Exhaust flaps permanently open in Sport Mode
  • GTS style enhanced exhaust pops and bangs.
  • Enhanced Sports Displays to reflect the increase in power and torque
  • Optional selectable power modes for ECO, Comfort, Sport and Sport Plus
  • Speed limit removal
  • Higher rev limit for manual cars
  • Remap cloak to prevent detection by BMW

With the addition of the Akrapovic exhaust, which is another work of art, we have been tirelessly developing the M3 M4 remap to rank amongst the best in the world. Power is now a staggering 545bhp with torque at 775Nm.

Featured Reviews
Landrover Disco
Friday, 8 December 2017  |  Matthew

Did a great Job on my Discovery 3

Monday, 23 October 2017  |  Martin

Took my 328i in for stage one remap and very impressed with results. Bhp now up to 285 and torque increased from 350 to 450Nm.

MK6 Golf R
Tuesday, 3 October 2017  |  Paul

Took my Mk6 Golf R for a Stage 1 remap after a recommendation from a friend. The guys put me right on the correct super-unleaded to use - yes they aren't all the same - and remapped it for me and I'm over the moon with it. Sharper pick up and great response especially in Sports mode so I'm one happy bunny and would happily recommend them to anyone. Cheers guys

BMW M135i
Friday, 15 September 2017  |  Ben