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I'd stick away from the Grimmspeed one. In high-G loading it can cause the PCV system to actually suck up oil and do bad things. I'd rather not have an AOS than the GS one, unless something's changed.
dont bother with grimmspeed its 100 percent useless i bought one cuz it was cheaper and ezer to install might aswell just have thrown that money away ended up getting a crawford aos. if i had to choose right now i would go with an iag one.
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