n54

Hi guys so Im a total noob at forums lol. but here it goes I have a 2010 BMW 135i and the fuel pressure is all over the place. I read on here people with similar issues but they're running PI, my car is on DI only with a Helix overdrive on full e85. My current fuel setup is: Helix Overdrive...

Hi Everyone! My name is Raphy and this is my 2010 135i aka my 1M tribute. Full 1M conversion, Speedtech 6266 setup, 3 piece fikse wheels, and a bunch more! I’m on IG @raphy.v

Okay so I have a 2011 bmw 135i I blew the turbo and decided if I’m pulling the motor out that I was going to n54 swap the car to enjoy the dct a little more. What will I need to make the harness work or would I have to go with a stand-alone

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Hey everyone! Been having issues with my vehicle since the single turbo setup was complete. I have been reading through reddit's, forums, and many other websites but their is no definitive answer for my issue. I'll explain the setup the car is running to get you guys some more insight along...

Hi everyone, I came to this forum because of quality content I've found by google. I'm working right now on Z4 35is and hope to find some answers here with performance mods. Keep doing a good work!

Selling my 2007 E92 335i, 6spd MT, 700WHP. All maintenance up to date. This car is an absolute dream to drive. Feels like a stock car until you hit about 4k rpm. The sound of this car is music to your ears. The t51r mod sound is hypnotizing. The car is well built, no check engine light or codes...

I need help on where i can find a harness for bosch style shorti injectors on doc rac PI intake with fuel rail. If i cant purchase one where do i get the stuff to make my own and how do i make my own, im going maxxecu also with the pnp harness

Hello everyone, I've been lurking on these forums since I got my car, but have never actually made an account until now. I have a 2010 E61 535i xdrive with just basic bolt ons, MHD tune, and some small cosmetic enhancements (m5 style bumper etc etc). I've had so6me issues with this car over the...

Hello all, Soon I will be taking my engine out and putting it into another chassis... I just wanted to know if anyone has any experience or tips with dropping the : Engine, Subframe, trans, all suspension at the same time ? I want to make the swap as quick as possible... I have access to a...

07 E90 335i 6AT posted this to e90post but not much happening over there so I’ll try here for as much info as I can get ;) I originally chased a misfire all the way around the car (bad HPFP and coil on cyl 3), I replaced my entire fuel system besides injectors 1-4 and fuel pump control module...

Has anyone successfully decoded boost pressure from OBD canbus? I have not tried tapping into PT-CAN yet, just waiting for an Arduino shield to arrive before splicing a canbus wire. But getting boost from OBD should be possible as these dongle are able to do it somehow - albeit may be a little...

i’m running mhd v7.1 stage 1 map,arm charge pipe with a tial 50mm bov (11 lbs spring ) fresh index 12s and my rail pressure seems to be okay, new plugs and high performance coils , car runs and drives great but whenever i flash anything other than stock maps i get crazy high afr values but the...

i’m running mhd v7.1 stage 1 map,arm charge pipe with a tial 50mm bov (11 lbs spring ) fresh index 12s and my rail pressure seems to be okay, new plugs and high performance coils , car runs and drives great but whenever i flash anything other than stock maps i get crazy high afr values but the...

Im hitting no where near my peak boost, a previous log showed me hitting 7 psi at peak, but now im only hitting 5.

Hello, I'm fairly new to the forum and this is my first post, so I apologize if it ends up in the wrong place. I am in desperate need of help. I have been having a problem for the last 3 months now where the boost builds to around 20psi and then it drops off quickly. By the time the half...

In Canada, don't have E85 here. Highest is 94 on pump (weird that its one higher than 93 in America? Anyways). I have a stock 335i and here is my mod list that im planning on purchasing, will this land me at 400whp? VRSF CBE Street VRSF Catless DP BMS DCI BMS CP + Tial BOV VRSF 5" IC BMS Stock...

Hello, I'm Nick and I am currently trying to figure out everything that I will be needing to rebuild my engine(N54 2008 135i 8 Bolt Manual @174,XXX Miles) to OEM Spec. I am Planning to get Hydra HP650 Turbos and aim for 550hp with headroom. To my understanding, the stock n54 motor with no...

Hi guys, Please have a look at the below logs. Does this look like HPFP failure? Basically what happens is, if I pull the car in WOT, I get a 29DC error code - injector shut off. It will then miss horribly, until I clear the codes. **Logs were taken with a leaky injector #1, which has since...

Hi All: After scouring the BMW-related forums, I have been unable to find definitive answers to my emissions-related questions regarding my N54 with catless downpipes. I understand that the answers to these sorts of questions can be specific to a particular vehicle's problems and...