I just had one fitted today, its definetly resonated aswell. its absolutely ridiculous, Its not that bad on idle, but as soon as you get to about 3000-3500 revs, under load its unbearable. I dont mind a sporty exhaust note, but you cant even hear a passenger speak it resonates through the cabin that much.
I think if the pipes were more downswept it may help as the way they are positioned, if theres any airflow from underneath the car, the distance between the pipes and the valance may just push the noise straight up behind the bumper.
I cant even change mine as I just ordered an rline rear bumper, so cant even swap to a v6 style pipe. and the fitting centre I used demolished my exhaust trying to get it off, it took them 2 hours to fit it!, so cant even revert back to oem, going to contact milltek today to see if I have any other options.
