Honestly I didn't know PCV had a map sensor option and ignition module for turboing the busa, which makes it work but reguardless the grom doesn't have that capability and is still just piggy backing off 125cc timing maps as a base . From experience tuning turbos I'd still take a standalone over pcv when boosting a busa. Noticed videos from 2011, how's it running now days?
I always find it funny tho when someone bashes a product over user error than tells other people using that product "good luck you'll need it" lmao, old rotten sour patch. . .