Checking K04 Wastegate Preload

I did a drive today with the N75 valve electronically disconnected in order to check how the boost profile looked when only on wastegate cracking pressure.

The pre-installation check of the wastegate preload showed the wastegates to be set to open around 7.5 psi:

Logging the boost pressure on the road confirmed that the wastegates appear to be functioning correctly at the specified preload reading.

Chart of BorgWarner RS4 K04 boost profile on stock wastegate cracking pressure
BorgWarner RS4 K04 boost profile on stock wastegate cracking pressure