We are pleased to offer our dyno and dragy proven custom specification turbos.  These turbos utilize an RS4 compressor housing and RS6 turbine housing, larger then OEM RS6 compressor wheel and a high flow RS6 turbine wheel.

The turbine wheels allows us to lower back pressure limited by housing sizes which lets the engine breathe easier.  The RS6 turbine housing has been shown to make 20psi by 3800 RPM (mods and engine health will change these characteristics).  We have been able to easily make 500whp on 94+Meth with a stock motor and 620whp on E70+Meth with just aftermarket connecting rods.

The turbine wheel utilizes a 5x blade design turbine wheel to further decrease backpressure

This turbo is perfect for a stock motor setup even with stock fueling as the turbo is doing much less work to provide the power.  This means lower IAT's with a slower spinning turbo which extends its life.  When you decide to begin upgrading the supporting mods you will not have to repurchase a turbo to hit your power goals in the 600whp range.  A comparison to make is that if you are just upgrading to stock RS4 turbos you are still simply creating and OEM stage 2 setup where the power drop off can be felt sharply in the upper RPM, it is not a true performance upgrade above an beyond what the OEM supplied.

The lag is far from an issue and is barely noticeable vs this sharp power drop off on smaller turbos, you can easily downshift to reduce the lag, you can not magically change your smaller turbo into a larger one while driving.

Turbos are supplied with basic wastegates but we highly recommend swapping to Mamba or Tial to ensure less actuator issues.  With heavy springs or ample use of launch control, NLS and RAL expect that the wastegate rod connecting the flap to the lever arm will twist and require adjustment via the wastegate arm.