hey im going 2 the track 2morrow and i got the mazada wheels with a 225/50/15 BF drag tire.. what rpm should i launch at and psi should be ran modz under sig..

 

try 15 psi and try dumping the clutch at 4k rpm. there really is no exact science to it you just gotta play around with it. and if you browsed the 1/4 mile forum you would've found some very useful info on drag radials.