[DieselDuck]

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[ovekvam]

Originally Posted by DieselDuck

About breaking in the car, I read many different theories.. My dealer even said I don't really need to break it in, as long as the temps are warm I can push it. Is this true ? How I'm doing it now, is the first few hundred miles I drove it very relaxed trying to variate the RPM's, gradually (after approx 500 miles) pushing it full throttle sometimes, but 90% of the time just relaxed / "normal" driving.

There are instructions for break-in in the owner's manual. In our car we were supposed to stay away from high RPM and full throttle the first 2000 km. I don't think it is very critical for the engine if you don't obey these rules. My guess is that BMW has a break in mapping that protects the engine.

[No one]

Originally Posted by DieselDuck

My F21 LCI 120dA M Sport

It's F20 that's pictured, actually.

Originally Posted by DieselDuck

I guess that's enough pictures for now

Quite more than that, IMHO: exhausting to browse.

Originally Posted by ovekvam

My guess is that BMW has a break in mapping that protects the engine.

Has anything changed after you broke it in? My guess is they can't make full performance unavailable for safety reasons.

[DieselDuck]

Originally Posted by No one

It's F20 that's pictured, actually.

What do you mean ?

F21 = 5 door
F20 = 3 door sportshatch right ?

[DieselDuck]

Originally Posted by No one

Has anything changed after you broke it in? My guess is they can't make full performance unavailable for safety reasons.

The "safe ecu map" used to be true on some previous models, you could read it in the mapping that it was unlocked after (iirc) 5000km's. Ofcourse you need the gear and software to be able to see that, but I have this from a reliable source.

On the newest cars though they don't do it anymore, and it has full performance straight away.

[No one]

Originally Posted by DieselDuck

What do you mean ?

F21 = 5 door
F20 = 3 door sportshatch right ?

Wrong. Just the opposite: http://www.realoem.com/bmw/enUS/select for example.

[DieselDuck]

Originally Posted by No one

Wrong. Just the opposite: http://www.realoem.com/bmw/enUS/select for example.

Ohh, I had it wrong from the start lol, thanks.

[No one]

Originally Posted by DieselDuck

The "safe ecu map" used to be true on some previous models

I limited myself to "Comfort" when breaking in ("Sport+" ever since). When going on a motorway (under speed cameras) to pick up the license plates I did feel like testing the tech speed limit rather than the break in one (160 km/h) and nothing but desire to preserve the engine seemed to stop me. Imagine, it can be a matter of your life to speed up just right.

[ovekvam]

Originally Posted by No one

Has anything changed after you broke it in? My guess is they can't make full performance unavailable for safety reasons.

I can't really tell, since I waited until after break-in to test full throttle and high RPM. :-)

The fuel consuption seems to have improved a bit. It is even less thirsty now.

[jabugui]

My 120i I drove slowly only the first tank,with many city driving for brakes, steering, suspension etc to break in. After that, 500-700km, imho, just normal driving softly pushing progressively even in sport modes until 1500km having plenty of fun under 5000rpm, and then full gas to the limiter if you wish. Just avoid hard flooring, kickdowns, hard braking and stuff until 5000km for the car to be well worn before the hard things, and even think if this hard is really needed. The fuel consumption progressively goes down with even more wear does good and the you reach the minimum of the cars life at some point. My car is 11000km now and I think the minimum is not reached yet.