Evening all. New to me 2014 tdv8 and I get restricted performance and can even get it to do it stood still with light revs. Codes are similar to what leads people to check vacuum control pipes which I’ve done and checked the csov with vacuum which is moving. The only thing I’ve noticed so far is the maf live data on bank 1 goes higher than bank 2 and that seems to be when the fault triggers. This would make me think air leak somewhere but nothing showing with quick smoke test(will try again tomorrow) can’t recall codes as solus has just gone flat and haven’t got the charger with me! Any ideas and help much appreciated. Thanks. J

Almost impossible to say without codes at this point. V8 or else ...

MAFs are for the primary and secondary turbos, not bank 1 and 2. Airflow through the secondary turbo will be virtually nil unless the secondary turbo is working.