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Discussion Starter · #1 ·
Alright i just installed my header on my 2.5 and there is another hole on the header that needs to be filled with something.

Its a stillen header.

I have no clue what its there for, but i was thinkin i would just plug it with a bolt.

also what is the black box there for? Im not sure what it does and my cars CEL hasnt turned on sooooo......?


sorry its jumbled but its been a long night.
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