but information on them has been hard to come by. I haven't seen a dyno or any reports by people who have them. They're not even on Z1's website yet. Hopefully this information surfaces soon.
Also, in one of Russels posts he actually states that the 510's will not only spool quicker that the SP500's, but also make more HP. These lofty claims have sparked my interest so I'm patiently waiting to see some real world data.