The 2002–2003 Acura RSX factory fuel pressure specification is 47–52 PSI (320–370 kPa). Here’s how to test K20 fuel pressure and diagnose readings outside the factory range.
A warm Acura RSX should not remain at 1,500 or 2,000 RPM. Diagnose vacuum leaks, throttle operation, IACV control and PCM sensor data before adjusting anything.
A smoking turbo does not always need rebuilding. Restricted oil drainage, crankcase pressure and installation errors can force oil through a healthy turbo.