OK guys heres my question .
Why do people say that 10.5 compression is too high for the m20b25 on 91 oct. ?
While my 2001 325ci has 10.5 c/r stock runs on 91 oct.
Why do people say that 10.5 compression is too high for the m20b25 on 91 oct. ?
While my 2001 325ci has 10.5 c/r stock runs on 91 oct.
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