Quote:
Originally Posted by Fuego
If it was stuck open, it could pull unmetered air while under vac. It would run rich under boost though so his theory doesn't work here.
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the only way a leak would cause a lean at idle condition would be if it's past the throttle body. Otherwise, it would run rich. Anything leaking before the TB (Between turbo and throttle body) would cause a rich condition, including a leaky bov.
Ah, and this is straight from Nistune's web page, #2 clearly states not to use fake mafs:
