This is SCN, you knew you weren't going to get a straight answer
It's pulling more air than it should, even if it was boosting ok it should still only do 160 odd g/sec as it's stock.
When my outlet hose was cracked it was still boosting okay-ish, but n75 was high, as you'd expect (you might still have some logs!)
'tis really odd, for sure..
Check the platic pipe that the MAP's fitted to