Hi there...

Actually i thinking about a new Turbosetup, but not shure if it make sense and which one to choose..

At the moment in have approx 520bhp
Spec:
Long Rods
8:1 compression
Airtec Intakmanifold
BD15+ cams
Head stock
long Bolts
2wd exhaustmanifold with GT3076R .72ar @ 1.9 bar boost
Siemens Injectors
DTA T4+ ECU
Aitec 100mm Intercooler

My idea was Nortech Manifold
Turbos
7064 (no idea if it reach the bhp without headwork and how much boost is needed,i read somewhere it need 2.5 bar for this power)

7163 (sounds good, but heard about surge problems and Mark Shread says it will not fit to YB)

7670 (should be make easy the power but is it realy much more responsive then the GT30, if not it make no sense for me)