It's been about 2 weeks now since I had the resonator cut out of my exhaust. I've driven enough now to know how it sounds and I must say I am quite surprised. My car is actually quieter when cruising at high revs than before. After all I read about exhaust drone without the resonator, I hesitated a bit before having it removed, but now I say to all Zetec owners, cut the thing out, you won't be dissappointed!!!