Nothing actually to the car but I ordered a mandrel to do the bends on my planned exhaust. I want to make sure I don't lose any power, I noticed on one of the pics another member posted of his exhaust that the bends were not made with a mandrel and had big deformities at the rear bends, this really hurts the performance as flow can only be as good as the most restrictive section. I'm not trying to offend anyone here, just stating the facts.