WHAT DOES TOYOTA 4AGE ENGINE FOR SALE MEAN?

Re: ITB Conversion on sixteen valve 4AGE seriously? perhaps i really should receive a new just one then? at the moment i get about 7.5L/100km for my fairly conventional ae92 SX? (around 450km's amongst gasoline lights) i havn't experienced mine plugged in for over six months due to the fact redoing the exhaust just before xmas! (snapped it off)Adap