Help!! RPM choked when cold start ends

[Jayzz]

Hello, Bimmer Experts,
Help me out, I recently got my F82 M4 ZCP, 48000 km about 30000 miles, car is stock.
The issue is that right right cold start, rpm would raise suddenly, then drop to normal rmp range. Sometimes, it’s just a slight raise, sometimes it’s will raise couple times then drop. Almost feel like my engine choked. Check the clips.

Sec 29-32 is when the cold start ends and rmp start to up and down for no reason
This doesn’t happen all the time. Some time it’s worse sometimes it’s less obvious. Don’t know if it’s normal for f82. Somebody may experience the same issue?

https://youtube.com/shorts/rfvJFuN3T...0hlW7EGxouns3V

[N1rve]

Originally Posted by Jayzz

Hello, Bimmer Experts,
Help me out, I recently got my F82 M4 ZCP, 48000 km about 30000 miles, car is stock.
The issue is that right right cold start, rpm would raise suddenly, then drop to normal rmp range. Sometimes, it’s just a slight raise, sometimes it’s will raise couple times then drop. Almost feel like my engine choked. Check the clips.

Sec 29-32 is when the cold start ends and rmp start to up and down for no reason
This doesn’t happen all the time. Some time it’s worse sometimes it’s less obvious. Don’t know if it’s normal for f82. Somebody may experience the same issue?

https://youtube.com/shorts/rfvJFuN3T...0hlW7EGxouns3V

It seems normal to me.

[Jayzz]

Originally Posted by N1rve

It seems normal to me.

This one didn’t go crazy, sometimes it goes up and down for 3 times😤, but when I pointed my camera to the car, she behaves

[N1rve]

Originally Posted by Jayzz

This one didn’t go crazy, sometimes it goes up and down for 3 times😤, but when I pointed my camera to the car, she behaves

That’s how it always is. Like when you go to the dealer for an issue and then it disappears lol.

[Rockshaker]

That’s what my 2018 does but with an MPE installed the cold start is brutal!

[Kilabyte]

Originally Posted by Rockshaker

That’s what my 2018 does but with an MPE installed the cold start is brutal!

I had to code it out, was way too obnoxious, esp with a midpipe.


OP, try changing the plugs maybe? Mine was idling a bit rough when the plugs were due for a change.

[WhiteFox]

Normal really

[N1rve]

Originally Posted by Kilabyte

I had to code it out, was way too obnoxious, esp with a midpipe.


OP, try changing the plugs maybe? Mine was idling a bit rough when the plugs were due for a change.

I just got my plugs changed a week ago and my car is the same with that little skip of a beat.

[G35POPPEDMYCHERRY]

kinds normalish. tbh its best not to worry about litte things like this on a tempermental sports car

[M3SQRD]

Sounds normal to me. Do you have an aftermarket intake? With an aftermarket intake, my rpms jumped around more once the intake was installed. It got worse after I turned off the cold start. I’d have to wait at least 30 sec otherwise it felt like it would stall if I inched forward too soon

[YXEM5]

Originally Posted by M3SQRD

Sounds normal to me. Do you have an aftermarket intake? With an aftermarket intake, my rpms jumped around more once the intake was installed. It got worse after I turned off the cold start. I’d have to wait at least 30 sec otherwise it felt like it would stall if I inched forward too soon

That looks pretty normal to me.

Where I live it gets quite cold, -30C. With my dinan cold air intakes, my F80 cold starts can be quite an event. At times it will even stall. I used to worry but it turns out it's pretty common. Chalk it up as one of the many strange behaviors ours M's make.

[Jayzz]

Thank you guys for the help and reply, I tried several time, couldn’t capture the worst case that it happened with my camera. Maybe i overthinked this.😤