Oh, oh, messing around with the throttle position on the 93-up (?) M104 engine while under the hood sets of the limp-mode. At least that's how I think I read it here one time. If I'm being a dope, please someone correct me.

But yes, mass airflow sensor needs checking

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1995 MB E320 Wagon
2001 BMW 530i
2007 MINI Cooper S (!)