So i got a good deal on an 05 636 a couple of months ago. The issue I have is with the exhaust. It came with what to me looks like a straight pipe. It also kind of looks like the a similar voodoo/jardine/hot bodies side exit exhaust. From what I have heard though is that I might not have enough back pressure with such a free flowing slip on. So my question is what is my best option here? I'd personally like to avoid spending 300-400 on a used stock exhaust. I dont mind spending a little money but if im gonna drop a few hundred I'd rather it be on something after market.