I'm seriously looking to add a cold air intake to my 2005 GT. Seems to be a bit of controversy whether to get a tune or not. I spoke with a guy at Brenspeed and he told me that no matter what I buy it would need a tune to actually perform. So I'm looking for input from all of you. Brenspeed kit is a JLT II @ $554.00 with 3 tunes. Not sure what the 3 are. Hoping for some help on this. I guess you can spend to amazing heights here. Just want to get the best bang for the buck. Thanks all!