Iv diag from egr back to the canister even took it to the shop.. They did the same thing and found the source of my problem for odb2 p0443 was actuly the ecm.. I looked up and found 2% people had related it to this issue out of hundreds here on the form and on various pages through Facebook that I'm associated.. Thanks lancer peeps. But I have anothet question I can't seem to find.. Will an 03 ecm plug up to the 04 . lancer oz 2.0 with out neededing to be reprogrammed. California laws.. Thank you in advance for any body who takes time to help answer my qurstion