Bro, in this case, i custom a twin exhaust system for your auto MYVI with a suitable sflow midbox like this.



Firstly, u can eliminate the bad position of the stock muffler which causes heat at backseats. Second thing is that u gain better pick up with this sflow and adding a swirling bullet in front. 4-1 extractor is to replace the stock one , so gain better FC by eliminating the CAT. Lastly, it is up to you to get a stainless steel(chrome) piping which will look best and total new setup. I will pm you the price.