there is only 1 BOV you can use on T7 that will make noise (dumb IMHO) and not throw codes. I think that is the HKS SSQ BOV/Recirculator. I understand that it works and doesnt throw codes. It wont give you any performance increase whatsoever.
This will give you the "LOOK AT ME I'M BOOSTED" noise all the children want these days.
2008 9-3 SS: Stg 1
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