I just picked up my new M3 and was doing a drive with the sales reps and talking about the break in period.

He said that the car would be more powerful and faster after bringing it in for the break in service. He said the ECU is dialed back quite a bit until the first service.

I’ve never heard of this before and can’t really find anything online about it.

Is he talking nonsense or is this really the case?

He has an f80 which he had from new and worked there for 4 years so would hope he knows what he is saying.

Anybody else heard this?

  • burnsniperBEnglish
    1·
    10 months ago

    I believe this is a myth as well. There are d reasons to follow a break in procedure but I don’t believe the ECU is updated/touched at the service. Fluids are simply drained to remove any metal and casting parts that are designed to wear in.

  • kon---BEnglish
    1·
    10 months ago

    Break in service remaps your butt dyno.

    Also, finally revving to redline is the first time you’ve accessed what that experience is like.

    So.

  • wayoutwest2121OPBEnglish
    1·
    10 months ago

    Thanks all, it did sound a little far fetched to me. Might just feel faster as not as hesitant to put your foot down.