Pops and bangs on an 18i?

Pondy

Muppet
 At the summit of the picturesque fens
Hello again,

Yesterday was the first time I got the Z4 out of the garage since we got it (as it's been either snowing, freezing, or raining). I have been busy making it look more presentable though!

I noticeD it pops and bangs a bit on the overrun when revving the engine at standstill. It has what looks like a standard exhaust and I don't think it's been mapped. Is this normal for the "baby" Z4?
 
I am the opposite, life is too short 9At least it is at my age) so just go with whatever.......
 
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