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.

Last code was p00bf air flow too high. Previous was that and p004d p004b boost control solenoid b circuit high and circuit range performance

Does it have fitted the additional short loom between the side of the sump and the primary turbo that's meant to stop oil migration along the oil level and temperature sensor harness?

Not sure I’d have to check

One thing I did notice was the csov was slow in movement when I put vacuum on and released

I know when I tested mine with a vaccum it closed with a good 'thunk'.

Yeah thought it should. I’ll have to see how quick the gun releases vacuum and just pull pipe to check

Returning fault is p00bf mass air flow b circuit air flow too high

P004d-77 and p004b-71 are the codes I can’t get on top off. Anyone had the same?

For anyone that may encounter the same, turned out the vent to airbox and vacuum supply lines were the wrong way around. Took a while to notice but got there in the end!

Just a thought!

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Excellent! If only all faults were that easy to fix.

kevin-t wrote:

Just a thought!

Skip to 37 mins....