1988 RX7 GXL (Automatic)
 

So I recently purchased a 88 RX7 GXL, I cleaned out the fuel tank replace the pump/ stained, spark plugs battery, sat for 15 Year’s btw, she starts i can get her to idle at 1000 rpms I try to rev her up quickly she is very hesitant if not at all but if I go slow I can get her to redline if I wanted to. But will still lose power. if I put her in drive/ reverse she stalls out. She’s in pretty solid condition any suggestions on what to check?

did you clean the 15 year old crud encrusted injectors?

^this, I'm amazed it started with those injectors honestly