I am looking at upgrading my exhause but I am not sure what to do.. is there much more of a power gain to be had by going to duels instead of just a preformace muffler on a 4.6?

StirCrazy

 

I went ahead and upgraded my exhaust to duals and was not
dissapointed in the results. I was expecting a little power loss
on the low end, but I haven't been able to notice any. I would
say it actually seems to have more power on the low end. It
sounds excellent. These trucks love dual exhaust!