What latency settings are you using?
Cant answer this but arent 630cc right at the limit for a piggy back?
Thought it was really difficult to get them working correctly.
This is interesting
m http://www.ludicrous-speed.com/wiki/ind ... or_Scaling (http://www.ludicrous-speed.com/wiki/index.php?title=EManage_Ultimate_Injector_Scaling) m