In a V-6...
My resonator got trashed by some road debris so I had a 4" glasspack installed at the resonator location. Sounded OK, but the highway drone gave me headaches. After some weeks I changed it out for an SVT exhaust & a Magnaflow 5x8, which was awesome.
A four banger may give you a similar result. If you're experimenting with just a few bucks, my suggestion would be to go for a 6" glasspack. That should eliminate much of the drone. Want a nice setup? Start with a stock SVT exhaust & then change out that res with a Magnaflow - If you want to.
