Ok, so I put an oil pressure guage in when I pulled my mini-me out and put in a straight Y8 - I've noticed the oil pressure drops from 75 psi down to 50 psi when VTEC engages. It makes sense because VTEC is oil pressure activated. However, I've seen oil pressure guages on both a D16Z6 and a B16A, and neither of them seem to do it. Is this specific to the weak pumps in the Y series, or do I have an oil leak in my head after the solenoid?

 

Anyone?