My car has a straight pipe replacing stock resonator, I dont notice any drone sound that I was expecting.
Funny on glass packs though, on a truck I had-I noticed power and fuel economy had improved when stock muffler rotted out. I had a single glass pack installed thinking I would keep improvement with a bit of sound. The opposite, the truck couldn't get out of ts own way. I drove 2 miles and returned to muffler shop and they replaced glasspack with a section of straight pipe. The result was I could light the tires with ease and it stayed this way till I sold it a couple years later. Made no sense to me but it worked.
