My car heats up to the half mark on the dash and the blower works at full speed however barely any hot air is coming out just air
solution?

 

Try flushing the heater core.

 

already have done this

 

did this again however
no sludge inj heater core

anything else i can try?

 

Not sure on this one, i had the same problem but flushing the heater core worked for me.

 

You probably filled the coolant correctly, but I've heard of a heater not working for a year until the problem was found to be a little bit of air in the system. But the heater in my 94 z28 never has worked very good anyway.