have you fixed your blazer yet..cuz i had the same probelm as you changed everything and almost bought a new computer...but whats funny is that my m,a,p sensor was the reason it was boggin out and shutn off on me...so check ur map sensor make sure its making a connection....it might not be makin ne connection..i took off the moisture cap off and it ran like a champ...so just wanted to let u know wat was wrong wit my blazer...hope it helps