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Like the compressor, turbine wheels are measured in mm.

The downpipe is made of 3" stainless tubing in two pieces which is V-Band and connects to your factory or any aftermarket exhaust that accepts factory gaskets.

The 1k turbos have 46mm turbine wheels, but back pressure is greatly reduced with the proprietary stainless manifolds meaning you make the same power with less boost means the turbo and engine work less harder and last longer and also there is about 150whp more of top end with the 1K turbos vs stage 3.

DOC Race car run the AD-Engineering dual core which is rated at 1000hp.

The car makes great power and has been very reliable for me because of a diligent installation with proper parts.

Once I decided to convert my N54 from twin turbos to a single turbo, I spent countless hours researching what kit I should go with, which parts needed to be replaced, what upgrades needed to be done, etc.

There is no more core fee so your stock turbos are not needed to be returned anymore and I wont be buying anymore at MMP as we will switch to manufacturing turbos with our new proprietary castings exclusively.

Parts list: Precision Turbo, 2 Turbosmart Comp40 wastegates comes with 14psi springs , DOC Race Stainless Multi-Piece V-Band Manifold, 3" Stainless Upper Downpipe, 3" Lower Downpipe connects to factory location exhaust , V-Band Clamps, 2 Stainless Dump Tubes, 2.

This is not a good area to run rubber hose like some systems do.

DOC Race suggests an AD-Engineering port injection kit which include additional fuel injectors to support the power level this turbo kit is capable of.

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