[M-technik-3]

Any reinforcements coming? Nice turbo good for 650 on on normal pump gas.

[oVeRdOsE.]

Originally Posted by M-technik-3

Any reinforcements coming? Nice turbo good for 650 on on normal pump gas.

yeah around 600-630bhp from what I can find online. And of course 20-30% more on E85, but we dont have this here. Getting a meth kit anyway.
Only on the BEF tune with the twinies, I was impressed. Understand why people get over bmw problems when you can get those numbers on stock block

[oVeRdOsE.]

PART 2 - Dismantling the receiver


N54 is in one corner of the garage, E91 go in.

Now, would I be able to fit both engine in my 11x20 garage? we'll see.



I started with the rear subframe to get rid of it quickly and make room.

Findings:
-Very little rust on the chassis.
- Subframe quite rusty, but usable.

I put rust-converter on the chassis, and I'm waiting 24 hours for the oil paint.



It's all pretty much unplugged to get the front subframe down. But getting the engine out will be another day

[M-technik-3]

Tough space to work in but it's do able as being proven.

[oVeRdOsE.]

Originally Posted by M-technik-3

Tough space to work in but it's do able as being proven.

an other guy did it on gravel outside few years ago, he posted his thread here, but wasn't very cool, didn't really want to help people about his swap. I wont be like that !

[oVeRdOsE.]

- installed the subframe, new springs, new shocks.

- still have to do the brake lines, amazon's flaring tool isn't half bad even if some good reviews, i got a good one.

[oVeRdOsE.]

- sparkplug 2s step colder and gapped
- new Eldor coils
- new PCV



continuing the engine removal



N52 out

[oVeRdOsE.]

CLUTCH IN !

After 6 months of wait, this delayed the project.

DKM twin disk




FINALLY the N54 can go in.

Put the transmission in. I was sitting on the transmission and pushing in while controlling the height with the jack




Now time to push the engine in.

The ONLY time I've asked for help, my bro helped me, mainly to guide the engine, it fits to the 1/2''.

[oVeRdOsE.]

front starting to look like a car




Removed the lp fuel pump fuse, and start the car to check if turbo got oil.
It does, put the oil line back.
Crank it few seconds.

Then plug the fuel pump back,

AND start 1st time !!! what are the odds !?

[oVeRdOsE.]

on first re-assembly.... argghh

The A/C condenser on the 328 is not the same as the 335.

The 328's is bigger, and the intercooler doesn't fit.

[oVeRdOsE.]

it's starting to look like a car.

- brakes and suspension
- intercooler
- wiring
- mac solenoid.
- headlight.

I wanted to start it today, but I loose my patience bleeding the brakes. The clutch line was leaking, I removed it to replace the seal with my donnor, and it took me 1 hour to put it back on. I didn't want to remove the drive shaft . I'd just redone it with locktite and torque spec.

When I finished fitting the line, I said to myself that's enough for today.

[oVeRdOsE.]

lets go with a valved exhaust to keep quiet in my neighbourhood.



planning to locate the meth pump, will go behind the bumper , on the crash bar.

[oVeRdOsE.]

finally my first test drive. I spent 6-7 h this weekend to reassemble everything that was left.
Including 1 hour just finding the right win7 drivers for the k+dcan cable.

- need alignment
- there's something loose in the suspension
- need exhaust.
- some engine check.
- meth not working.

This week I'm making an appointment for the exhaust.

[oVeRdOsE.]

to the exhaust shop anndddd ohhh no !!!!

serpentine shredded. I dont know why, no oil leak. I assume weak tensioner.



Get to the shop but returned on the towing



Meanwhile, new exhaust . 1-2-1 , HFC+ vibrant resonator 18'' + valved muffler. 3''





Massive tips




Engine bay pics while waiting the towing

[oVeRdOsE.]

out for a ride

[oVeRdOsE.]

Worked on the LP fuel system


Added some small heatsink


I use a ATI9600 old graphic card fan.
I've use the fuel pump 12v+ , and the frame to 12V- .



3 holes acting as vent at the other end of the casing (not shown)



Added thermal past on the EKP back so it can transfer heat to the car frame bracket.
Working A1




Now the walbo 450LPH fuel pump

few fitting , BMP fiting



I keep the bucket !

[oVeRdOsE.]

PART 3 : Interior

removed the E91 interior .

Time to retrofit ;

- comfort
- PDC
- Seats
- steering wheel (with heated option !)
- individual audio
- CCC to CIC
- alarm
- Trims



Hifi is out


Comfort is a mess to retrofit


After MANY hours interior is back


and ultimate goal ACHIEVED !

[3PedalJake]

Wow what an impressive build! I'm in the middle of what to me is a major rebuild but gosh it's childs play compared to your project. Who would suspect that big honkin single turbo lurking under the hood of a mild mannered e91, that thing is the ultimate sleeper.

Interested for details about your seat retrofit since I have that on deck after I finish the other stuff. I have a pair of Dakota leather fully powered sport seats to replace the heated & powered bolster but otherwise manual leatherette sport seats my 325i came with. I know I need to add a dcan bus line but unsure what other wiring mods it will need. Any insights appreciated.

Again, what an awesome build you have going, hats off to you bro

[oVeRdOsE.]

Originally Posted by 3PedalJake

Wow what an impressive build! I'm in the middle of what to me is a major rebuild but gosh it's childs play compared to your project. Who would suspect that big honkin single turbo lurking under the hood of a mild mannered e91, that thing is the ultimate sleeper.

Interested for details about your seat retrofit since I have that on deck after I finish the other stuff. I have a pair of Dakota leather fully powered sport seats to replace the heated & powered bolster but otherwise manual leatherette sport seats my 325i came with. I know I need to add a dcan bus line but unsure what other wiring mods it will need. Any insights appreciated.

Again, what an awesome build you have going, hats off to you bro

thanks !

I was lucky on this built, my E91 is a late 2008 with sport pack, and the E90 is a early 2009 with sport pack too.

So the seats were plug n' play, since both got powered seats.

E91 has vinyl, while the E90 has leather.

The only thing I didn't retrofit is the active headrest, so 1 wire remain unplugged, but no code nor error warning.

[3PedalJake]

Well that is some luck. I'm finding a lot of info on the seats, too much in fact every post contradicts the one I read before. Guess I gotta start with finding the proper schematics, that's a challenge too lol.

I'd like to be a passenger in your E91 on "Take a hellcat to Gapplebees" day.

[oVeRdOsE.]

Originally Posted by 3PedalJake

Well that is some luck. I'm finding a lot of info on the seats, too much in fact every post contradicts the one I read before. Guess I gotta start with finding the proper schematics, that's a challenge too lol.

I'd like to be a passenger in your E91 on "Take a hellcat to Gapplebees" day.

after all this swap, I learned a lot of stuff, but in the mean time, most item were plug and play, so I did not dig in insane rewiring and headache. I simply swap the FRM, CAS, Cluster, DME, and many other module. So basically, only the chassis is a E91, the brain and power is a 335.

The adaptive headlight and comfort was the most complicated, which it was not a huge issue.


To document in this thread the DIY I've used :

AHL retrofit DIY : https://www.e90post.com/forums/showthread.php?t=1982984

comfort DIY : https://www.e90post.com/forums/showthread.php?t=1211167

alarm retrofit : https://www.e90post.com/forums/showthread.php?t=1487

heated steering wheel : https://www.e90post.com/forums/showthread.php?t=1528395

individual retrofit : youtube channel VYS Garage

similar E91 N54 swap : https://www.e90post.com/forums/showthread.php?t=1616749

Similar E91 N54 swap in video with tons of info (ive use it mainly for subframe and prepare mentally how intensive it will be) : Bimmer Barn 335 E91

[StradaRedlands]

Originally Posted by oVeRdOsE.

PART 3 : Interior

removed the E91 interior .

Time to retrofit ;

- comfort
- PDC
- Seats
- steering wheel (with heated option !)
- individual audio
- CCC to CIC
- alarm
- Trims



Hifi is out


Comfort is a mess to retrofit


After MANY hours interior is back


and ultimate goal ACHIEVED !

Well that looks easy!