Quote:
Originally Posted by olehead
It has been confirmed that the AFE CAI will give you a CEL - that code indicates too lean a mixture - BMW put stock back on and I ran for 2 weeks with no CEL - I then put back the AFE and it almost immediately we got the same CEL code - ran a smoke test to make sure no leaks etc - Cleared and ran it again - same CEL - I am now back on the stock CAI -
Mike makes a good point above about a tune - I will hang on to the AFE until spring when I install some tune (have not decided yet on which tune want to see results and if there is anything new by then) AFter putting on the tune I will put the AFE back on and see -
All the BMW experts agree that that one reason is the denser air in cold weather which exceeds flow limits using the AFE
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Sorry to hear that, keep in mind only the JB4 will take care of that code.