I just installed the air intake on my 1992, 325i, I noticed that the Onboard Computer said i'm getting 21.2 MPG. I was getting 21.6 MPG before I installed the air intake. Now my check engine light is recently came on.
Yes, I did remove the airbox sensor and put it in the new air intake. The check engine light did not came on right after new air intake installled, the light came on like 6 weeks after. I did not ride very hard with the new air intake.
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