Hondata

Ok i have a b18c5 with a ls stroke 84mm bore.
ok the issue is:
from a dig or roll when full throttle from 1st to 2nd, when i hit second the car does a complete nose dive, RPM's drops to 0 for a sec or so then it comes bac and stumbles through out the rest of the RPM. it also does it from 2nd to 3rd ...