Some don't use a BOV????
and everything ive learned tell me that compressor surge is bad.
BUT- if im not mistaken, the GN didnt come with one from GM
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But if you do not have this style housing your putting a lot of strain on the bearings and fins of the turbo.
If its just a weekend warrior its not as important but if you drive the car a decent amount just spend the 100-200 bucks on a good BOV.







