Datalog 335I E92 N54 (DCT) Power seems to be lacking in the low end and top end

Sneaky_N54

New Member
Feb 29, 2024
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hello everyone. I've recently picked up a 2009 335i e92 with the DCT. I've decided to buy MHD and get stage 1 loaded on the car as it was stock and engine bay was super clean with no modifications done besides the rear muffler flap being disconnected. (Car looks super well looked after inside and out with red leather 🤤)

Felt the difference from stock and to be honest, I couldn't really tell any difference, may of been a small amount more torque but nothing to write home about and it doesn't throw up the traction light either no matter what I do. The tune I've got loaded is MHD V10 and V9 (tried both) Stage 1 93 with no extra options enabled besides selecting stock downpipe and making sure transmisson is DCT before flashing. I'm very confused, only thing I did notice is on the highway, when I go WOT the cars pulling okay but about 5k rpm I can feel an extra kick come in and pulls harder so very weird.

(Towards the end of the datalog pull, the car did throw up a half check engine light with the error code (29DC - DME: Cylinder injection cutout) and (2AAF - DME: Fuel pump, plausibility "shadow code")

The guy I bought it off has had a 135I N54 swapped into it (Not sure if that affects anything) due to the last engine dying (Not sure on the story) but this N54 has been inspected and placed in by a respectable German mechanic that builds 600+HP n54's so I do trust where he took it as they are good.

I'm going to pop the datalog below and if anyone could have a look and get back to me if they find something odd, I'll muchly appreciate it as this car is my baby, wanna make sure she's fixed up :)

- https://datazap.me/u/sneakyn54/2009-bmw-335i-e92-dct?log=0&data=2-3-5-14-20-21-22-23-24