Unporting the engine of fuel during heavy acceleration.
 

I'm looking for some information from anyone who might be able to help me solve my fuel problem.
I have a 93 rx7 which i do some road racing with and have a problem with the engine unporting of fuel. This happens during heavy uphill acceleration usually bearing a left turn anywhere around 1/2 tank or less. Has anyone else had this problem and what can I do to fix?
...besides having to add fuel every time i get down to 1/2 tank, this makes for a long day.