http://www.cfm-tech.com/TBIPOWERPLATEinfo.htm This is the one Im looking at. I've done a search and have come to a few questions- 1. Are TBI spacers worth it? Its 100 bucks or so, wondering if it adds any HP/increases fuel economy. 2. Is their spacer really better than the ones avaliable from JEGS or Summit? The only real difference I can see is in the middle, it allows air to flow from one side to another. Thats all I can think of right now. Any help/comments/etc would be appreciated.