Hey this is my first time posting on this site. I have an 05 S40 T5 that I am going to start working on this summer. I was looking for a good performance exhaust system for the car and found that there isnt a catless downpipe for the S40 but there is one for the C30 at atpturbo.com and on Ebay... Does anyone know if that downpipe is the same as the S40. I don't care about the emissions and I will just put on the stock DP when its time for inspection. Does anyone know any negative impact that having no Catylitic converter will have on the car?