Spoke to a bmw shop in my area, guy said, given what I already swapped it's most likely the CCV. He told me change that out and if still have problem, bring it and they will smoke test it for me for $165.

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2003 X5 3.0i Silver (build 07/03)
2006 X5 3.0i Blue
1977 Ferrari 308 GTB
1994 Ferrari 348TS Speciale #14/15
1989 Ferrari Testarossa