2006 gsxr motor problems
 

Igot a 06 gxsr 600motor in a micro sprint. WhenI get out of the gas and then get back into the gas it falls on its face for 5-10 sec. then it takes off. Even on the starts it falls on its face. I am running on alcohol. When its idoling it sound fine when i rev it up it sound fine. Under a load on the track it falls down. Need help thanks