New Member Need Major Help

hi i recently purchased a 05 mazda rx-8 an month ago and the car shutoff on me two days after i bought it, ppl have told me it was the starter so i went and got a new starter...the car started and no less than 10 miles it cuts off on me again when i come to a complete stop at a light. i bought new fuses for the ignition and relay but still it doesnt start! i have jumped this car multiple times and it doesnt get a charge unless i use the jumpbox but after the jumpbox if im not revving the car its dies again! like the cars battery is getting drained!



i got my battery checked its good

starters good

altenators good

fuel pump ive been told is good

idk whats draining the battery like this



some say bad grounding but idk where to start looking!

what could be the cause of my car not starting!