not doubing karls work
but
what boost is he running to achieve 400+
with a better flowing inlet could you not achieve similare power with less boost
or what ever power
I know what ur saying and I'm not doubting anything people say but all Karls figures are done with the o/e manifold both exhaust and inlet. Two of the most commonly changed items on RS turbo's.
The 400 bhp conversion from what Karl tells me has many custom bits but all based around the standard equipment.
I think there's just that many options and opinions here its all down to tuners choice and what think works best.
Roll on another RS turbo thrash in a couple of years I say there's plenty of nice cars in the pipework
