The turbo 3 stood its ground as far as durability goes, but I took a hard hit which backed it into my pully. The dent looks painfully ugly, but if I look within the pipe, there's no damage. So it's basically a superficial dent, which I was able to partially push out using the freezer method. The stinger reinforcement withstood the hit. I just thought that any dent to the pipes meant a totally ruined pipe. Is the outer shape of the pipe an important factor in tuning, or is more of the inner portion of the pipe?