n54

For those that would like to integrate the Low Pressure Fuel Sensor (LPFS) from the 135/335 into their Z4 35i/s I made this tutorial video. The video covers the mechanical and electrical aspects but you will need to consult a tuner for the firmware integration. I’m currently using it in...

Hi everyone I have been doing lots of research to find a set of reliable big power twin turbos that are available for the N54 market in 2023. With lots of light being shed on modern N54 v3 and v4 17t's & 19t's I have decided it would be smarter to stick with reputable brands, mainly due to the...

Selling a set of Hydra HP800s with ARM relocated inlets. I decided to change direction and go single turbo so I no longer have a need for these. They were only run for 6k miles and are in perfect condition with zero shaft play. I’ll also include a new turbo install kit with purchase. Asking...

I am just wondering what y'all think about n54 twin turboing either my 92 accord or my 86 jetta gl deluxe

Hi there! I'm here to research for my upcoming n54 swap and to learn all things boost! I currently have a 2005 bmw 330xi (e46) that's basically stock apart from the custom long travel coilovers, custom built winch bumper and roof rack, full underbody skid plates, 4.44 diffs, and 30in...

Hi, And hello to everyone on Spoolstreet. My beloved 335i n54 has come to the point of 100k miles and it's time to move on from twins. I'm planning to move to Doc Races bottom mount single turbo kit with 6266 gen 1. I try split my typing into segments, so I can explain everything I will do as...

Hey all, I know I might sound like a broken record, but I am still trying to figure out my 2A87 / 3100 errors and it is driving me nuts. I have run though a whole bunch of advice from this forum now and am just about out of ideas without it settling on being a cam ledge issue that I still don't...

Hey guys! First time poster here, to start I have a n54 with a doc mount 6266 top mount kit. I was hoping I could post my logs here and see if anyone could help me figure out why I have so many timing corrections . The car is JB4 with a JB4 bef , fuel is full e85 although the pump I go to only...

I recently gambled on a 335i from across the country for only $3,500. Once it showed up, I realized it had 19T turbos, FBO, inlets, outlets, etc :fearscream: Enjoy my buddy and I's first reaction once we realized how fast it was...

So once I realized the dilemma of needing oil catch cans after installing the valve cover. Due to there being no cyclonic separator, as well as not being able to reuse the OEM PCV or CCV (Crank case vent hose) as the 2 ports (high/boost and low/vacuum) on the M18 VC are both just -10AN. I then...

I've finally started to install my Speedtech kit on my 1er. I figured I would post some progress pics alongside asking for some advice. What vacuum lines are recommended by other st owners? Do I leave both waste gate solenoids connected but out of the way, I have a 3 port Mac but no use as I am...

After successfully completing my DCT swap on MSD81 and pushing my unopened 199xxx mile n54 to 700hp on stock clutches. I did a 5.84 second 60-130 dragy time and had a lot of fun rolls on the street with all the stock bmw components. I never got to post my 2 cents on what it took to swap the...

Hey all, hope someone can chime in Bought a used hand 1M that came with a custom tune. Am going to experiment with MHD, but would also like to keep the custom tune available in case I want to just stick with it if the OTS maps aren’t better. MHD uses a generic stock file when flashing back to...

In great working condition. New meth kit alone without aem controller goes for $568. Asking 390obo. Buyer pays shipping

Fully built motor just getting the last few pieces before I assemble it.

hey i am in FBO my spark plugs and my coils are new, but I never changed my fuel pump my injectors have 40K kms - DME active codes - 29CC - DME: Raté de combustion, plusieurs cylindres. (DME: Combustion misfires, several cylinders.) 29CD - DME: Raté de combustion, cylindre 1. (DME: Combustion...

Hey Guys, I am trying someting with the new MHD+ Suite, I want to create a RFP OTS Map Tune as MapSwitch Option RFP Stage 3 V12 will be Map 1 RFP Stage 2 V12 will be Map 2 and Map 3 will be Stock don´t have time to test it today but in the next days I will test it and do some loggs. Will...

Does anyone know where I can find the information for the ignition coil engine harness electrical connector, part number 12-52-7-519-996? I'm specifically trying to obtain it directly from the manufacturer. It appears to be the Lear Corporation, but I can't find anything that can direct me to...

2009 BMW 335XI So recently I've been trying to diagnose my misfire on my N54, I have swapped coils, spark plugs, injectors, changed injector seals, decouplers. My car is still misfiring at idle and under 100% load for some reason and I don't know what to change or what to swap anymore. If...

I just finished my single turbo conversion a few weeks ago, and I want to turn up the boost. Currently with 14psi springs I get ~11psi w/ JB4. Map2 is 17psi and I'm not sure if that is safe as I only have 91oct available. - What is a safe level of boost on 91 octane? - Also, for JB4 Map6 can I...