Well I am just trying to get all the goods and bads about these two types of headers. Well I have the stillen headers. They run great from 3000 rpms to 6500 rpms. You can really feal them kick in. Well I think they are great. I had A 1997 accord and I got headers and they shore as hell didn't kick like these stillen headers do. Well the installation was easy took 45 minutes. So I have heard that hotshots are better and I would like to see somehow which ones are better?