Originally Posted by AW128i
since you can feel the manifold changeover points (3,000 and 5,000 RPM, I think), it's placebo.
That's really interesting to learn - I hated this about my e46 330i which I believe has a 2 stage manifold. It always felt like the car was really sluggish until it switched over, then it'd have a very faint 'hiccup' then pull strongly. The n52 with single stage is nice and smooth the whole way up.