The E46 M3’s electronics are set up to give the best overall output balance of power and torque against features such as fuel economy. This compromise, if you can even call it that, favours an all round balance to the car which is what the vast majority of M3 customers look for. For those prepared to sacrifice on the fuel economy and willing to push the engine a little harder then there is a power boost to be had with an ECU remap. In this video we’re going to discuss all of the different options available.
Video Subject Specifics:
- What ECU remaps REALLY do
- Which brands we like and why
- What kind of horsepower gains you will get
- How some software upgrades fix the “throttle tip-in problem” on the M3
- How the ECU upgrade is done
- When additional mods should be used concurrently
- Whether or not daily drive-ability is affected
- The TRUTH about software manufacturer performance improvement claims
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2004 BMW E46 M3
