12-20-2023, 11:26 AM | #1 |
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Chasing Lean Codes/Help Reading Log
Brand new member to the forum, hello everyone!
I have a 2013 335xi MSport 6MT. Current mods are Dinan intake, EVRW charge pipes, VRSF intercooler, m performance axle back. I am currently running MHD stage 2 for 91oct. I use 93oct gas but have read about people having better luck running the 91 map. I do intend to have a custom tune done after downpipe install and squaring away this lean issue. I have been getting the occasional code 118001 Fuel air mixture too lean. I am looking to see if anyone can take a look at my datalog and see if anything stands out. I have done a little bit of reading up on interpreting them but i am still not really up to speed. I am dropping the car off tonight to have a clutch/rear main seal/downpipe done and am going to ask my mechanic if he can have a look as well. Any and all input is appreciated, thanks in advance. Datazap Link https://datazap.me/u/joeywygand/3rd-...g=0&data=21-37 |
12-20-2023, 06:03 PM | #2 |
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Noting really jumps out on fueling. STFTs are actually pulling a decent amount of fuel in the upper RPM.
Your boost and load is pretty far below target, though. You might want to have a smoke/pressure test done to check for vacuum/boost leak if the car is already going in. Could explain a lean code (vacuum leak unmetered air) and negative STFTS (boost leak metered air) recommend reading my datalogging thread if you havent already: https://f30.bimmerpost.com/forums/sh....php?t=1732327 |
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