follow the instructions and check for error codes:
http://www.cygnusx1.net/Supra/Librar...aspx?S=FI&P=22
check your timing:
http://www.cygnusx1.net/Supra/Librar...aspx?S=IG&P=10
try cleaning your cold start injector:
http://www.cygnusx1.net/Supra/Librar...aspx?S=FI&P=50
use something sensor safe... possible fuel filter clog even??
check for codes, check timing advance, check cold start injector, report back with error codes.