I met Insidious & the owner of Billet Design in person when I was down at the Tower Shops meet last weekend. They are nowhere as big as Injen, so it takes them longer to do all of this work from scratch. They also explained that they had other projects that had higher priority, but now they are supposed to be working on our stuff. I think I remember hearing that they are going to also try to make hard pipes & a turbo back.
Anyway, AEM is also making a SRI, so don't think that your only option is a CAI. Several people have run great times or good dyno #s with just a K&N drop-in. If you're so impatient that you can't wait for a SRI & you think that a CAI is a better alternative, go ahead & buy one.