"i tighted down all the nuts"
thats not enough to rule out an exhaust leak bub. Did the sound start after you put the new exhaust on? Then its prolly an exhaust leak. And thats about anyone can say from the info you gave since we don't know what it sounds like.
thats not enough to rule out an exhaust leak bub. Did the sound start after you put the new exhaust on? Then its prolly an exhaust leak. And thats about anyone can say from the info you gave since we don't know what it sounds like.