Originally Posted by scoobwr1
I'm at around 380 but I'm wanting a genuine 400/400. So I was thinking about a 9 turbo,how safe am I without forging or is it a must at 400bhp.carl
The VIII MR turbo and IX turbo as far as I'm aware will flow the same, therfore produce the same power.
Regarding forging/forged rods for 400bhp+ all I'll say is CAN WORMS BIG