Thanks for the input on your pipe man, but now you've sparked a new interest.... hollowing out the cat. Have you heard of, or seen the kind of gains we can expect by hollowing it out? I understand the concept of the cat, and know that usually they restrict the hell out of an engine. But considering honda's quite extensive engineering into this little car, do you think punching it still produced significant improvement? I don't mean to pester, but I'm really starting to think that honda has pretty much taken every avenue to intelligently produce maximum horsepower in this thing.
