yeah, the thing is that, yes the wait in the engine bay is hotter, but the piping is shorter, so more air is pushed though. if u get it from the wheel well, its cooler, but has to travel further. so im not sure which is the way to go. as for coil packs, they xfer power from the batt to where they need to go, usually faster and with less resistance. they add anywhere between 10-35hp
315 is way too much tire for his needs.
Yeah, never go with 18's on a new edge, especially if you live in the city, you will always scrape the tire and it will get chewed up so you'll end up with having to roll the fenders. not to mention the addition of extra weight, 17" for sure.

I have also heard that the headers on a new edge 2v are not worth the money for power that you gain for the install....:idk:
well, if i get a s/c most of the items listed will be needed anyway, correct?