i recently put a b16 first gen motor in my 90 integra. and the Mil comes on while cruising.. and after high rpm's it does as well.. ive done my research in all data i know how to read the codes as well. and code 11 is not a manufactures code. theres not even a code 11. Alldata states that to check for codes not specified you need to try A new ECU>. its a pr3, obd 0, all my wireing is correct, and it runs awsome all the time.. it does have two (2) O2 sensors in the manifold. could the ecu be the wrong one for the b16? could it be failing? im a tech like you others, im in college for this stuff. ive stumped my instructors on this one.. any thoughts?