Without modification overboost has the "potential" to kill engines - excessive pressure from the turbo -> excessive pressure in the cylinder -> conrod/piston take the pain. That said, I don't know the figures for over boost on a vanilla setup with the waste gate capped.
Going by most people's definition of straightforward..probably not. Corrosion of will be you biggest potential problem to overcome. Having a workshop at your disposal is recommended.
The above assumes it's a hard fault...although, it's always nice to know your air mass' peak voltage ;)
If your VCDS guy can clear the fault, see how you get on before cracking out the scope.
"Signal too low" is the result of the actual airflow, as sensed by your air mass meter, being less than the predicted amount when compare to the map.
A primary function of the air mass meter is to monitor the operation of the EGR valve, essentially providing closedloop feedback. So for...
System is happy then. If you haven't noticed drop in MPG, all is well (probably).
Plausibility check may be a bit slow if the MIL behaviour is different than before. To be sure everything is okay, would be worthwhile having a tech look at the relevant measuring blocks with a scan tool.
UV light damages the lenses over time. This produces fine crazing in the lens which appears misty. Polishing can sometimes help with this to restore a satisfactory beam pattern.
The other main cause of misting is of course moisture inside the lamp that can't escape. In this case either excessive...
There's a bunch of them, but its likely only one will be causing your issue if the noise is local to the glovebox area. If I recall correctly the glovebox-area actuator is the most accessible...some of the other central ones are a nightmare of a dash strip-down. PM full VIN if your needing any...
Yes, if you are going to go the extra mile and route the purge pipe out of harms way with a hose, then you can leave the purge valve connected (electrically) to keep the ECM happy.
Your attention to detail here is admirable but don't get carried away modifying your engine bay for a "quick test" :D
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