Perhaps they are talking about the ignition coil? I have never heard of an ignition igniter, the vehicle is gas, not diesel, correct?
There is an igniter on the 79 celica supra. Had to have one replaced many many moons ago on the one I had...the entire electrical system went out when the part went up. With parts and labor back in 84 or 85 it was about $400.00.
Search Toyota Supra Questions
Toyota Supra Experts