So I recently swapped a Ej22t into my 86 Brat. Everything seems great except for when I go driving on the highway and when I get off the engine seems to flood with gas. I have a manual switch for the fuel pump so when I get off the highway the engine stalls, I turn the pump off, start the engine and turn the pump back on. Does anyone have ideas why it's flooding out like that?

The EJ22T PCM should be controlling the fuel pump, is there a reason that it is wired through a switch? This raises other questions about the wiring done during the installation.

Almost sounds like a FPR problem. Pull the vacuum line and check for fuel. 

Both ideas sound great. . I'll checkout both. Thanks guys..