I am pretty sure there are code readers out there that pinpoint exactly what the problem is... For all you know it could just be that the mass airflow sensors just need cleaning. You should maybe find a more competent shop and tech.
I remember seeing BrosFourSpeed on YouTube check a code on the fly and found it was his HFC and was able to clear the code too. Sounds like they want your money.
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2017 Ford Focus RS Nitrous Blue "KB43VER"
2014 370z Mag Blk 6M "KOKURYU" (Black Dragon)
Last edited by NISMO IX; 02-17-2018 at 06:40 PM.
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