Ok firstly
1. Single wastegate but 2 pipes go in to 1 further down
2. Not been re-mapped yet, but the engine feels a lot smoother on idle
3. I have heard those horror stories too, but my twin scroll housing was perfect, nothing melted at all, I suppose that's because of the good mapping
4. Exhaust turbo housing hasn't changed, a/r 92 or 90 somthin, always been divided
5. Runners look the same diameter but I will measure when I get out of bed.....
6. Greddy runners ARE longer but not verry long but that's what I was worried about. Also my xs was wrapped. Well half wrapped, the rest fell off...
it's been mapped by RyanG on torque developments hub dyno so I have the previous Dynograph @ 641hp wheels and around 740 & crank
It will be re-mapped again very soon