cant get car started

[91dsmgsx]

i just re built my 91 gsx had it runnung for like maybe 10min and couldnt get any throttle respone found out that the revious owner wiried in a diff. tps,got that fixed then tryed to re wire the fuel pump and i thing i blew the MPI relay in the prossess and relocated the battery to the trunk i was wondering if i re wired the fuel pump wrong while the battery is in the back if it would still cause the relay to blow i replaced the coil pack and tested the injectors and everything checked out but it still wont start theres no spark or gas would it be the MPI relay or something else if anyone can help me out it would be great