correct me if i am wrong.
it is true that you cant really hold the steady rpm with same amount pressure on peddle.
i have tested my 50i as well, you have to really pay attention to control the force you put on peddle to have a "steady rpm"
however, i think it is because of the electronic throttle and bmw valvetronic.
your maf reading looks normal to me since that is what i am getting after changing the maf.
how is your engine perform at normal during cold start, idle, accelerate and decelerate?
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