It's most likely a udp kit. Obviously doesn't add any horsepower, it just frees up some power from underdriving the accessories. In his case, a horsepower or two. As far as his radio remark, some kits come with an alternator pulley that will negatively effect it's charge. The loss is so minimal though, that unless he's running a stereo system of sorts, he shouldn''t even notice it.
My money would be on you in this race, but don't talk about it....be about it.