ditch the ecu and go to
www.msefi.com, will cost about 300$ if you have any skills, $175 if you have many. can your wideband datalog? there are good free tuning software to tune the fuel, a good spark tune requires some dyno time, MS can go as far as you can tune, get larger inj. my t3/t4 spools great but it is a 2.3