Just as the title states. Anyone who has had to has this modification on their car, can you share me your experiences with it. Did it improve at all? Reason I'm asking is this because I'm getting a deal for this thing brand new for half the price.. part number CA6994130T. Here's the link for clarity. I've tried searching the forums but nothing comes up.Thanks for the feed back.

http://www.jrponline.com/webstore/in...&pn=CA6994130T