Hmm, I'm confused by your posts as you stated before your brother goty an ECU off ebay and it started. now you say you ordered a used one and it doesn't start???? Please explain, I have never heard of an ECU missing a chip. Most thiefs aren't too smart. Whole ECU's are pretty cheap. If an Acura dealership says it's not the immobby then what did they recommend??? Give good information maybe start over with your story and don't leave anything out. I've had tons of factory training on immobby's and am considered the best person at my dealership on the system.. If I can help you into the right direction i will.