EGT sensor to aem ems v2?

1986.5supra_kid

Rice? No its Corn (E85)
from what i understand speed density is a reliable setup for turbocharged engines but not as efficent as MAF. done some reading in a few books and AFR sensor helps to tune but a EGT can fix the mpg and respond better to speed density. so i want to get a egt hooked up to my aem v2 but i havent found a answer yet.

http://www.aemelectronics.com/series-2-ems-for-lexus-sc300-1992-1997-778 on the box it clearly states it can handle up to 4 egt with fuel trim. just dont know how to setup/hook up/or what works(aem specific or can i use zeitronics...ect..)