Not yet Linc, I do know I need to get good flow to minimize surge of GT35. I might spend some time on the EECIV as well in that regard.
I am not claiming 500HP until the dyno tells me so, I have seen a bunch of people have to push hard to get it.
Good point on Aaaron and Danny, can you send me thier contact details and I will get onto it. I am gonna take the heads down to get them checked out first.