I would consider that a problem, wouldn't you? You're down 2lbs. in boost with a new supercharger. That doesn't bother you? I'm not being sarcastic, just curious.
No. Maybe I worded my post wrong or you misread.
The previous SC had been making the common bearing noise. I hadn't worried about it too much at first. Over time I started paying attention. When the car was new it was pretty common to see 11 PSI. By the time I took it in to the dealer it was only getting 9, sometimes 10; never hit 11 again.
Replacement is constant at 10 PSI. If I ran it on the high side of 4th I might still see 11. A single pound right now isn't worrying me.