Im the proud owner of an Audi S3. Its a lovely car even though it is a bit on the slow side in standard (virginal) trim. I therefore decided to get the car tuned. I had read warnings about getting the car tune and I was (am) aware that a tuned car take a bit more maintenance than a standard spec car. Im also aware that not all tuning companies know what they are doing. As a consequent I looked around a bit and decided to go for MTM as they have a good reputation. BIG MISTAKE, MTM are a very professional company abroad but . this is UK and in UK MTM-conversions are done by guys like KIM COLLINS. When fitting a new turbo, intercooler, exhaust, chip ect. he totally screw up. Firstly, the new exhaust cracked after 3mth and KIM refused to cover any of the cost to fix it. Next the turbo broke down. Kim Collins had fitted a bottleneck on the loop oil return line which over time made the turbo bearing wear out quick. I have been in contact with the Turbo manufacture, who state that the failure of the turbo was created by the loop oil return line bottleneck. I have also spoken to MTM in Germany and they also agree that both failures happened as a direct result of poor workmanship and general ignorance about fitting a MTM kit. However, since this was done in UK and not Germany they did not want to get involved. Before I did the upgrade Kim could come to the phone every time I called his shop, but when it suddenly came to discussing warrantee, then he was always out of the office or just not available. In the end MTM-Gemany contacted him and asked him to sort out the problem. When I finally got hold of Mr. Collins he did amid that his workshop had now changed the way they do these upgrade, but he would not cover any part of the +1000£ repair bill. In closing, I cannot say for sure that Kim Collins is a cowboy and maybe he has got better by try and error but to me it has been very expensive to do business with him. Please make sure that you have a WRITTEN agreement regarding warranties before you do business with him and do not think that his workshop deliver the quality and service or warranty that the MTM brand stand for.