Hey guys I have a 93 rhd rx7 that I recently bought I’m new to these cars and I’m having some trouble finding out what’s wrong, recently the car won’t rev past 4K underload i can be full throttle and once I hit 4K it loses all power and almost throws you out window it stops so hard. Also when this problem came around a weird beep started happening behind my dash randomly. I replaced all the broken vacuum lines I could find and replaced spark plugs. Not sure what I should check next. Thanks!

 

error codes! if you search, the car needs some LED's plugged into the diagnostic box, because the JDM cars have no CEL