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      03-15-2026, 11:27 AM   #20
335xiE90
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Drives: BMW 335xi
Join Date: Jul 2022
Location: Massachusetts

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Quote:
Originally Posted by lookalikehuuh View Post
Oh man those LTFT are crazy high... car is adding a ton of fuel. Are you sure you don't have some type of issue with an intake leak or maybe an issue with your MAP sensors (though this is less likely)?

I think some people have found air leaks around the valve covers, intake systems, or broken vacuum hoses when their vehicles behave like yours. Do you have a smoke tester that you might be able to use? If you don't this might be the best time to invest in one.
I recently replaced the cam ledges, so a leak is a definite possibility. Im scoping out smoke machines on Amazon now to test for leaks. I'll report back once I get it tested!

EDIT: I ordered a smoke machine, it will be here tomorrow. What should the LTFT values be?

Last edited by 335xiE90; 03-15-2026 at 11:37 AM..
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