n54

Hey y’all New here and to forums in general but I’ve got one I can’t quite figure out and I wanted to try here for some possible help! I searched through the forums and couldn’t find anyone with quite this problem, so my apologies if someone found the solution. I have an 07 335i coupe, 157k...

I am rebuilding my engine and plan to do some upgrades. I was about to order some forged rod and pistons but I have read that forged pistons expand more to heat and would cause piston slap and increased wear when the engine is cold. So basically every day when I start up. I am staying at or...

Hi hope everybody is having a nice start to their holidays. I took the car out for a drive and it felt underpowered, like it wasn’t coming on to boost properly and then there was a misfire on the way home. Took this log but didn’t capture the misfire. Any help would be greatly appreciated...

Hello guys first i have the following mods.Catless downpipes out the turbos, secondary cats present.5"intercooler, custom alluminum chargepipe with hks, and dci's, basically FBO bov, stage2+mhd 93 oct(running 100 octane from local gas stations).Ive been going at this for a couple of months...

What up guys, I've been working heavily on my 2010 135i recently. I pulled the motor, removed the valve cover and oil pan, and was pleased to see a reasonably clean engine. However, I do hope the rest of the internals look as nice. I plan on installing JE Pistons with Molnar Rods and ARP...

Has anyone gotten theirs yet? How is it?

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...