Competition exhaust instead of stock exhaust



Hey guys

So I just bought a m4 a week ago and Im not very pleased with the stock exhaust, I want to change it for a better (louder?) one. Before buying this car, I went to see a couple of m4 s and one of them had competition pack and I kind of liked it. So now on the internet there is a guy selling it for 500e (good price?) and I don t know if I should buy it.. And if I buy it how should I install it, (software change?) btw I think the MPE exhaust is a lot better but a litte bit too expensive for the moment.