okay so i gotta 88 rx7 with the 13 b non turbo today it will start up but revs up then dies all with in 5 seconds of the car starting ive re placed the full pump and assume its getting fire other wise it wouldnt even fire off

 

have you tried checking the fuel injectors, also have you tried holding the throttle open to get it to idle, maybe you just need to adjust the idler screw