04-24-2018, 09:23 AM
(04-24-2018, 08:56 AM).RJ Wrote: The factory air boxes are really good on modern cars. Everything I read about AFE for the E91 was no gains and shitty fitment.Yup, most modern factory airboxes aren't restricitve until you are 100+ hp over stock.
Reading deeper into it, and people have actually reported a loss on the Dyno.
Looks like I'll save $300 and just get a filter and that scoop.
Still wanna try and figure out how to get more woosh noises though.

