Turbo Concepts, Turbo Selection

Turbo Concepts Stg1 Backpressure

With the tune for the Turbo Concepts Stage 1 turbochargers now tapering in a manner similar to what I had with the BW K04’s it’s a good time to measure the pre-turbine exhaust back pressure.

The results for three pulls are shown below:

Turbo Concepts Stg1 Manifold and Pre-Turbine Pressure
Turbo Concepts Stg1 Manifold and Pre-Turbine Pressure

Compared to the BorgWarner K04’s readings:

TC vs BW Manifold and Pre-Turbine Pressure

These results put the Turbo Concepts product in the same range as the other K04-hybrids I have measured, the FrankenTurbo F21 and Turbo Engineers TTE550.

The ratio of exhaust back pressure to manifold pressure for the different turbo’s around 6500-6600 rpm is shown below:

  • BW K04 – 1.56:1
  • TTE550 – 1.70:1
  • TC S1 – 1.85:1
  • F21 – 1.80:1