I swapped a 1988 Ca. MAF 5.0L manual engine and harness and 8ld ecu.* Into a 1984 1/2 gt350 mustang... My question is, when doing a self test it never asks for the "response test"... it just goes strait to code 11... I can induce codes and it will display them just fine, it even will do the cyl. Balance test at the end of the self test if you blip the throttle...* but it never sends a 'code 10' to blip the throttle during any self test.* *It just skips right over it..* *an A9l did the exact same thing when I thought it may have been a faulty ECU..* any hints for me?* Im trying to get this through the emissions testing here in Ca. And the only thing is it wont do is the response test....I must have it wired wrong somehow but it runs well with no codes or check engine light..*Im pulling my hair out..Has anyone ever seen this before? ** thank you for your time.