As to the concern over the environment, the marginal amount of pollution that will be set forth upon the atmosphere from the extra carbon exiting my car a handful of miles a year is nothing to lose sleep over. The pollution created from one cow (i.e., the environmental harm from the harvesting and planting of its feed, the slaughter of the animal and the methane produced while its alive) is substantially greater than the extra carbon monoxide a cat-less Viper produces. Does that mean you'll stop eating beef or jump on a Nader bandwagon? While that may not justify my adding to the perceived pollution problem, it does put it in perspective. Besides, my pre-'72 daily driver is not required to have a power-robbing cat, and actually gets worse gas mileage than any Viper, so I'm willing to bet I'd be giving the environment a break by driving a cat-less Viper instead of my completly California legal daily driver.
As far as performance, no one can tell me that there is any other mod that will provide equal or greater performance gains at a cheaper price. I have seen various posts on this board attesting to 10-15 hp gains with cat removal. At a cost ranging from $0 for a do it yourself job to $300 for a flange install, it has to rank on an even level with smooth tubes and K&Ns.
My only question is, will this fry the stock resonators? Thanks.