Has anyone ever just taken off their muffler all together? I brought my car in for service earlier this week and a kid that works there walks up to me and says that I should take the muffler off. He said they dynod a V6 without any muffler and it was a 10HP gain. Any truth to this? Now, I honestly can say that I would never do this because I'm assuming it would sound like crap, but I was just curious is anyone has experimented with it.