Originally Posted by danimal
Simon, I had the same thought. I have looked at it as closely as I can without taking it apart and the internal vanes and flaps, etc. are indeed directional and probably force more air up the intake tubes than they could "suck" with the vanes removed (especially at lower speeds). I would like to think that the engineering is much better thought out than some give credit. As your tests have pointed out, the temps are very close to ambient when running. My simple mind cannot believe removing those items will increase airflow nor reduce temps. Looking forward to more stats from your testing.
Yes, I am sure the engineers at MB have done a much better job than they get credit for. The thing to remember is that they have a lot more things to take into account than the likes of us - production costs, emissions legislation, noise regulations, fuel economy, drivability and a whole host of other stuff. Here's a pic of the vanes in the MAF housing.
