I brought a catalyic converter from a company, had it fitted and the car failed the mot, after th3 mechanic doing some investigating he has said that the catalyic converter is useless, its only half full inside so is not doing what it should, I have contacted the seller a number of times and have provided all the photos etc that they wanted, and since then I've had nothing for around 3 weeks now, bit stuck on what to do now
