Guess its a matter of opinion. I noticed a little better MPG, but if I could do it over again, I would have replaced the res with a glasspack of some sort. We've got 2 kids, so our Tour is more of a family car, and IMO its just too loud. Plus when the exhaust is cool, it rattles like heck for the first 5-10 minutes of driving.
DAvid
98 SE Sport V6 ATX
99 SVT exhaust with no res
heatsheild where res was is secured with RTV
