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Originally Posted by willrev
Yes, I have confirmed that the mechanic did bypass the overboost protection vavle. Apparently is was a source of a bad vacuum leak. He simply joined the two vacuum hoses together.
Will this cause any damage? I trust this guy since he's at the dealer and is highly reccomended.
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Opinions vary. It's there for a reason, but whether that reason is still valid depends on the particular car.
Remember, something has to go wrong (to cause too high a boost pressure) for it to come into play anyway. Also, if memory serves me (someone please correct me if I'm wrong here), at least one forum member (
gsxr) determined that for one of his cars, it was essentially impossible to create an overboost condition even with the turbo wastegate disabled.
IF one really does run the engine with too high a boost pressure without having the overboost protection to tell the IP to cease and desist, I am given to believe that very bad things can happen.
That said, my car currently does not have overboost protection, but it's on my list. This thread is a good reminder for me.