My concern is the tuning of it. I don't want to have to screw around with it. I don't want flutter, etc. I know the stock ones aren't perfect but the thought of having to constant tighten or loosen this one doesn't thrill me. I think I'm just going to save myself 160 dollars and get the nice charge pipes without the BOV. Don't like the sound of venting to atmosphere... draws a lot of attention. My wife's Flex with a tune can outrun this car in the straights fully loaded with kids so I'm not trying to draw attention. If the mechanical on a stock turbo performs better and eliminates surging, etc and is fit and forget then maybe it's worth it.