So I got this http://audis4parts.com/2.7t-engine-p...7.1-m-box-ecu/ to flash my stage 3 file on it.
Shows up as m-box in nefmoto but when I put in my 02 car the abs and traction control lights show up. Build date shows 99 on the spare one ecu.
Are there any hardware differences in the ecu's across production years? I'm thinking since my spare looks like a early build ecu and my car has esp and thats why the esp and abs lights are on.
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