[papiboof]

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

[thejeremyman9]

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

[papiboof]

thejeremyman9

good looking out man thank you! i will let my mechanic know to thoroughly look over all that and i will read your thread 🫡

[jujudaman]

I have a similar setup. Took out the Dinan CAI and no more lean condition. The other option is to disconnect the MAF sensor. I opted for removing the DInan.