Ima just leave this little tit-bit here;
From:
http://www.dashengst.com/gt86-frs-br...kit-210ps.html
SPS UPGRADE
The Sprintex Performance Series (SPS) blower features advanced rotor technology that improves rotor performance and efficiency for a 25% increase in boost over the standard Sprintex blower. Available for purchase either as an upgrade to existing systems, or as an add-on performance option, the new SPS Blower is proven to increase HP 10-20% over the standard Sprintex system and torque 5 to 15% across a broad RPM range.
"The SPS features the same bolt pattern and dimensions as the standard Sprintex blower for ease of installation. Manufactured under ISO 9001 oversight, the SPS has the same quality materials and finish as the current blower model and will be the basis for the Stage II power packages soon to be introduced in 2016."