Don't see why not - these cars run sooo rich IMHO even if they're forced with 25psi it still shouldn't ping. There are others who's running 17% pulley without any sort of software upgrade - their engines won't blown it just that it's not making the most out of the pulley upgrade.
I spoke to QSZ about this a while ago and was told that it would not work properly with the 19% pulley.
Something about fuel ratio not working with programme.
Apparently only effective with 15% pulley.
just that i am not a track person, most of my driving is on street, and i rather go over 6000 rpm......... thats why i was thinking about getting 19% pulley........ and i thought that 19% will make the supercharge start abit eariler .......