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
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:
The Turbo Concepts Stage 1 turbocharger was a late entry in my effort to find what I thought would be the best stock motor turbocharger. When I ordered the stage 1 turbochargers it was with some expectation that the vendor's claims for the product would be met, or at least…
Some warmer temperatures made for an opportunity to record boost onset from the Turbo Concepts Stage 1 turbo's to compare with readings made during a cooler time of the year. Readings were made by going WOT from a number of different starting engine speeds. Shown below is a compilation of…
With some unseasonably warm weather today I took the S4 out to log some boost onset data with the Turbo Concepts Stage 1 turbochargers. I did some extensive driving around beforehand and then stopped to ship out a car part before I returned to take the reading shown above. What…
