<< At the end of the day, who do you think is going to be in better shape? Someone breathing normally or someone that has had to exhale into a balloon? >>
You say that as if a machine could get stronger from working harder.
<< It's a shame your little import job can't handle it. >>
From everything I've read, if you've got a little 4-banger, you'll get better efficiency and performance if you have some degree of backpressure.
Edit: Note above post--if the engine is tuned properly Also cut a line b/c in reality he's not actually giving any advise, just making a statement which makes me guilty of "arguing for the sake of arguing"