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BMW 3-Series (E90 E92) Forum
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BMW 335i N55 Negative fuel trim?
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04-25-2021, 11:46 PM | #1 |
Enlisted Member
3
Rep 32
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BMW 335i N55 Negative fuel trim?
New e92 owner here, just bought this 335. It runs good once warmed up but on cold start it idles real rough and the fuel trims are at -15 at idle ��
They change to about -12.5 when I rev it up. Just cleaned the maf and map sensor but didn’t seem to do anything, has a vrsf charge pipe, and a aftermarket inter cooler and the burger motor sports cai. Had a jb4 when I got it but have set it to map 0 and disconnected everything to stock. I for the life of me can’t figure out why it’s running so rich, tried doing a smoke test but smoke kept coming out of the hose that runs from the inter cooler to the turbo. Only codes I’m getting is p112e and p12a4 It’s a silicone hose so I don’t suspect it’s broken, I checked the oring it was fine, is smoke normal to come out that hose? Reseating it did not help. |
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