I am continuing to record some pre-turbocharger compressor inlet pressure drop as I did with the K03 turbo pressure drop. Now I am using the TTE550 turbochargers operating with a significantly higher boost pressure. With this Stage 3 setup I presently have the following boost profile:
Measuring the pressure drop in the turbo inlet pipe produces these results. Note: All data not specified as TTE550 is from the BW K03’s.
Not surprisingly the pressure drop is greater with the Stage 3 setup as there is more airflow through the inlet for an equivalent engine speed.
Below is a comparison of the K03 vs TTE550 Boost and MAF readings during these collection sessions. The greater boost and MAF lines are produced by the TTE550’s.
Interesting fact: K03’s reached 15 psi at 2667 RPM, TTE550 reached 15 psi at 3042 RPM — 375 RPM later.