Guys, I am assuming a dump pipe is the same as a down pipe. If not, well, I am talking about the right angled pipe that goes from the turbo to the flexi pipe then to the cat and to the exhaust tip.
I have just discovered that I have a massive dent in my 3" dump pipe.... I think the previous owner must have crashed or hit something badly. Anyway, I am going to get it fixed. But I am told that I should get a twin dump pipe to improve performance. Is it really better???

What is there to look out for when getting a twin dump pipe??? I was told to make sure the split is chunky enough to prevent any cracking or failure.

The price I am getting quoted seems very steep for a piece of bent tube (AUS$500). I am thinking I might just go and get it made at the tube makers. But what sort of material should I use??? Any special grade of steel??? Thickness???

Please help urgently!!!

Thanks,
Anthony.