they all give the same...if money is a concern, a super deal awaits on a nice piece over at www.myfordperformance.com MAC UDPs in either blue or red, 67bux w/BELT!!! cant beat that, and considerin their all essentially the same, u can score this up and spend far less money than on others. talk 2 ray over there, he'll help u (and u'll help a sponsor).
I have the Focus Sport one too! Nice mod cheap to install and gives nice power. Nothing spectacular but the car pulls a bit harder. Combine it with an intake and a cat-back and it gets better. Have fun