I have a similar problem with my Twin Turbo setup. It is sometimes just too darn loud! I have the older setup, where there are no Cats, and 2 small mufflers (one for each side). The newer kits (I am told) have dual cats, but no mufflers. Instead they have resonator tips. It is possible that those resonator tips may muffle the noise a bit, but most of the tips I have seen are designed to make more noise. They are like welding a coffee can to the tail pipe! I see the kids who customize the import cars seem to like MORE noise, so they put those resonators on their hondas so they sound like camaros. If you find anything, let me know. Rob van der Veer wrote: > > Hi, > > I've got a free-flow exhaust modified '81 DeLorean, and it is cool to drive > a D with such horsepower, but I want to dampen the noise a bit.