Because the Spectres are cheaply made(are you reading the responses to your other thread????http://www.ramforumz.com/showthread.php?t=42394
....Dude, guys on here that use the BFI, swear by it, and have numbers to prove it....That link I gave you that has the most votes for the BFI, are no joke, thats for a reason
...Others have had luck with the K&N with the second most votes so farhttp://ramforumz.com/showthread.php?t=41828
....These are not just CAIs made to suck air and make noise, these are CAIs that best suite,and have been specifically made for the HEMI engine in gaining the most HP and TQ, in talking about the BFI....So save your $150 that you wanna spend on that Spectre, and then save up another $300 and get yourself a good CAI that you know is going to work by word of mouth and experience from the guys who drive RAM HEMI TRUCKS on this forum....